National Security Vetting
CTC, SC and DV by Force
Some UK forces add national security vetting on top of ordinary police vetting. This guide sets out what MOD Police, the Civil Nuclear Constabulary, the PSNI, British Transport Police, Police Scotland and the National Crime Agency each publish about it: the level, the residency rules, what you are asked, how long it takes and how to prepare. Every fact comes from the forces' own pages, GOV.UK or legislation, checked 23 October 2026.
Independent information, not advice · Sources checked 23 October 2026 · UK-wide, force by force
MOD Police is the clearest: every new entrant needs SC and posts at sites such as AWE, Menwith Hill or RNAD Coulport need DV, with 5 years' UK residence (10 for DV sites). The CNC and PSNI both require National Security Vetting on top of police vetting but do not name the level on the pages we read. BTP and Police Scotland describe their own force vetting and publish no national security level for new constables. The NCA, which is not a police force, needs SC as a minimum. All of this sits on top of police vetting, never instead of it.
Our vetting levels guide explains police vetting itself (RV, MV and NPPV 1 to 3) and how national security vetting is added for some posts in the 43 Home Office forces of England and Wales. This page does not repeat that. It covers the forces outside that system, where national security vetting is part of joining. It says force by force what each one publishes. Where a force does not publish something, we say so rather than guess.
Two layers: police vetting first, national security vetting on top
Every police applicant goes through police vetting: checks on you, your history and the people close to you, set by the force under the College of Policing's vetting rules or its own equivalent. Some forces then add national security vetting (often shortened to NSV), the government's own clearance system, with levels known as CTC, SC and DV.
The forces in this guide describe the two layers in their own words:
- MOD Police lists "two layers": force police vetting under the College of Policing Vetting Code of Practice and APP (including open-source internet checks and national police systems) plus UK Security Vetting (UKSV).
- The CNC says you "must achieve both police and National Security Vetting". A 2021 freedom of information reply says that since 2008 everyone joining is subject to both UKSV and police recruitment vetting.
- The PSNI runs "Police Vetting and National Security Vetting" as two separate processes, with a separate questionnaire for each.
- The NCA requires national security clearance for every officer and runs its own "NCA Enhanced Vetting" on top.
The practical point: passing one layer does not pass the other. A strong national security clearance from a previous job does not replace police vetting. Police vetting alone does not meet a force's SC or DV requirement. Our vetting levels guide explains how the two regimes relate in policing generally.
CTC, SC and DV in brief
National security vetting has three main levels that come up in police recruitment. This is only a short orientation; the full description of what each level checks, from GOV.UK and the College of Policing, is in our CTC, SC and DV section.
- CTC (Counter Terrorist Check). None of the forces in this guide name CTC as the standard for a new constable. MOD Police's vetting page does not mention it at all: its minimum is SC.
- SC (Security Check). MOD Police describes SC as including credit checks and UK criminal and security record checks. It is the MDP's minimum for every new entrant and the NCA's minimum for every officer.
- DV (Developed Vetting). MOD Police describes DV as including detailed questionnaires, financial and credit reference checks, referee interviews and a detailed interview with a Vetting Officer. The MDP needs it for postings to some sites; the NCA for roles marked as needing it.
The PSNI calls its second layer "National Security Vetting" and sends applicants an "HM Government Security Questionnaire". The PSNI pages and 2026 guidance we read do not say which national security level that leads to, so we do not attach a CTC, SC or DV label to it.
Which level will I need? Force by force
The table sets out what each force publishes for a new constable (or, for the NCA, a new officer). "Not published" means the force's recruitment pages, as read on 23 October 2026, do not say.
| Force | Police vetting layer | National security vetting for new entrants | Higher levels |
|---|---|---|---|
| MOD Police (MDP) | Force police vetting to the College of Policing Vetting Code of Practice and APP | SC for every new entrant, as a minimum | DV for postings to some sites, such as AWE, Menwith Hill or RNAD Coulport |
| Civil Nuclear Constabulary (CNC) | Police recruitment vetting (a 2021 FOI says Thames Valley Police carries this out for the CNC) | National Security Vetting is required; the CNC does not publish which level a new constable needs | "The type of vetting required will depend on the role" |
| PSNI | Police Vetting (the PSNI says it aligns with the College of Policing Vetting Code of Practice) | National Security Vetting, using an HM Government Security Questionnaire; the level is not named on the pages we read | Not published |
| British Transport Police (BTP) | BTP's own "baseline vetting", needing three years of UK address history (the RV standard) | None stated for new constables | "Some roles" need higher vetting; BTP says you are told at application |
| Police Scotland | Full vetting by the Force Vetting Unit at the final stage | None published for new constables | Not published |
| National Crime Agency (NCA, not a police force) | Not a police recruitment process; NCA Enhanced Vetting is run on top | SC for every NCA officer, as a minimum | DV for roles marked as needing it |
| The 43 Home Office forces | See our vetting levels guide | Added only where a post needs it (same guide) | Same guide |
Two things stand out. First, MOD Police and the NCA are the only two that name a level in terms (SC). Second, the residency rule is where most applicants find out whether national security vetting is a problem for them, often before vetting starts. That is covered in the residency section below.
If you are choosing between these forces for other reasons too, our which police force fits me guide compares them side by side and the other forces hub links every guide in this series.
MOD Police: SC for everyone, DV for some sites
The Ministry of Defence Police is the force with the most detailed public rules on national security vetting. Every constable post is an armed Authorised Firearms Officer Counter Terrorism (AFO CT) role on defence sites. What the MDP publishes:
- SC minimum. "All new MDP entrants must obtain SC clearance as a minimum requirement." SC includes credit checks and UK criminal and security record checks.
- DV for some sites. Developed Vetting is required for postings to specific sites. The MDP gives AWE, Menwith Hill and RNAD Coulport as examples. DV includes detailed questionnaires, financial and credit reference checks, referee interviews and a detailed interview with a Vetting Officer.
- When it happens. Stage 4 of the MDP's six-stage process, after both interviews, combines the medical, the fitness test, "National Security Clearance Vetting and Police Vetting". The MDP starts your SC application and police vetting checks at that point. DV posts are processed "after your station allocation is confirmed and SC clearance granted".
- Information you give earlier. The application submission at stage 2 already asks for background details for security vetting, financial information and any previous police involvement.
- If DV fails. The MDP says you would be offered another posting suited to the clearance you achieved, with "no entitlement to relocation expenses". It warns applicants not to commit financially to a house move until clearance for the posting is confirmed.
- Later postings. DV clearance is needed "if later posted to a site with higher security requirements", so an officer cleared to SC may need DV later in their career.
- US bases. Officers working at United States Visiting Forces bases need a Common Access Card, which means giving personal information to the US Visiting Forces authorities.
- CTC. Not mentioned on the MDP's vetting page. Its minimum is SC.
| Item | What the MDP says |
|---|---|
| Nationality | Sole British National holding a valid British Passport; dual nationals and foreign nationals cannot be accepted |
| Residency (SC) | At least 5 years continuously in the UK before applying, no more than 6 months' total absence |
| Residency (DV sites) | 10 years, for sites such as AWE, Menwith Hill or RNAD Coulport |
| Counts as UK residence | Time abroad in the British Armed Forces or on UK Government service |
| Counts as time away | Travelling, studying, living or working abroad; not short holidays |
| Flexibility | GOV.UK: "not flexible and is strictly applied" |
| Police vetting standard | College of Policing Vetting Code of Practice and APP |
| Appeal | Refused police vetting can be appealed |
The sole British nationality rule is not a vetting outcome: it is an entry criterion, applied before vetting starts. It also applies to serving officers joining from other forces (New Entrants from Other Forces). If you hold a second nationality, check this before you spend time on an application.
For the full MDP process, including the two interviews and the fitness test, see our MOD Police recruitment process guide.
Civil Nuclear Constabulary: police and National Security Vetting
Every new CNC officer starts as an armed Authorised Firearms Officer (AFO). The CNC is clear that you need two kinds of vetting but, unlike MOD Police, it does not publish the national security level for a new constable.
- Both layers. You "must achieve both police and National Security Vetting". The CNC's 2021 FOI reply says that since 2008 everyone joining is subject to both UKSV and police recruitment vetting, with the police part "carried out on our behalf by Thames Valley Police".
- Level not published. The application process page says "The type of vetting required will depend on the role". No current CNC page we read names CTC, SC or DV for a new AFO. The same FOI says officers who joined before 2008 were vetted by UKSV "to either DV or SC level", but that describes older joiners, not today's rule.
- Residency is an expectation, not a bar. "There is an expectation that applicants would have been resident in the UK for a period of up to 10 years, depending on the vetting level required." Not meeting it "does not preclude an application". Extra checks may include police certificates from other countries, full overseas travel history, checkable employment history and references plus a certificate of good conduct. The CNC adds that there is no guarantee vetting will be achieved.
- When. References and security vetting start after you accept a conditional offer. References cover the last three years of your employment.
- How long. Security vetting is "the most time consuming part of the application process" and "can take up to three months". Military and police service checks can also take up to three months.
- Official help. The CNC's adverts link four short vetting videos on YouTube: an overview, finances, life experiences and internet use. Watch them before you fill in the forms.
The CNC's application form itself asks about family, tattoos, business interests, financial position, previous convictions and any involvement with the police, so much of what vetting will check is declared at the very start. Transferees from other forces also go through vetting, including a Professional Standards check of complaints and misconduct with their current force.
More on the CNC process, including the National Sift, the Recruitment Day and the AFO medical, is in our CNC recruitment process guide.
PSNI: Police Vetting and National Security Vetting
In Northern Ireland, vetting is one of the PSNI-managed stages that follow the merit list. The PSNI runs Police Vetting and National Security Vetting as separate processes and is open about what it looks at. From its FAQs and the 2026 Guidance for Applicants:
- Two forms, two weeks. You receive a Part 1 Vetting Questionnaire and a Part 2 HM Government Security Questionnaire. Both must be returned within two weeks of receiving them or the application may be discontinued.
- No time estimate. Because the two processes are separate, the PSNI does not give one.
- Who is checked. You, "your wider family circle and other associates".
- Partners. You must declare anyone you are married to or live with or lived with in the last three years, a relationship of more than 12 months in the last three years, or a former partner you separated from in the last three years. That includes long-distance, non-cohabiting, private, recurring intimate and close emotional relationships.
- Associations. You must declare associations with anyone who has a conviction, is under investigation, has "links to criminal or paramilitary activity", or was dismissed or allowed to resign from policing under gross misconduct investigation. Also anyone working in a business that could conflict with law enforcement, private investigators and journalists.
- Three-year history. There is no minimum period of UK residence to apply, but vetting needs a checkable three-year history. If you lived outside the UK or Republic of Ireland in the last three years you may need criminal record certificates from those countries.
- Contact. The Service Vetting Unit normally makes two emails and one phone call if information is missing and may invite you to a vetting interview.
- Risk Management Agreements. Some risks can be managed with an agreement, which may include posting restrictions. Refusing one can end vetting.
- Under investigation. If you are under investigation or on police bail, vetting is discontinued and you reapply when the matter is finalised.
| Step | Who | What happens |
|---|---|---|
| 1 | Service Vetting Unit | Checks your questionnaires; asks for missing information; may hold a vetting interview |
| 2 | Vetting Panel | Considers cases where concerns arise; may find you unsuitable |
| 3 | Independent Assessor | On your request, carries out a written review of an unsuitable finding |
| 4 | Chief Constable's Representative (Chief Superintendent or above) | Receives the review and makes the final decision |
| After that | None | "There is no further appeal process." |
The PSNI says it is bound by the Police (Recruitment) (Northern Ireland) Regulations 2001 and aligns with the College of Policing Vetting Code of Practice. The regulations, as made, provide the framework for the vetting panel and the Independent Assessor.
The PSNI asks applicants to be discreet about their application, especially dates and locations of assessments, induction and training; to tell only people they trust; to take care on social media; and to keep documents secure. It says the local situation can expose officers and those applying to a higher level of personal risk.
The full PSNI process, from the online test to the merit list and training, is in our how to join the PSNI guide.
British Transport Police: its own baseline vetting
British Transport Police vets its recruits itself and does not publish a national security vetting requirement for new constables. What it does say:
- Its own unit. BTP's vetting unit is separate from recruitment. Asked whether vetting from another force or employer transfers, the FAQs answer "Typically, no".
- The level. The guidance page refers to "our own baseline vetting". BTP's vetting sheet says Recruitment Vetting (RV) needs "a full 3 years of UK address history" and Management Vetting (MV) needs five years. The three-year residency rule for constables matches RV, but no BTP page states in terms that constables are vetted to RV.
- Higher levels. BTP says some roles need higher vetting and that you are told at application.
- When. Only after a conditional offer, once there is a target start date. References cover five years and are taken up only after an offer. The formal offer or contract follows once the security checks are complete.
- What is checked. For you: ID, police data, financial data, address history and social media. For family, co-residents and associates: police data and address history.
- Biometrics. A DNA mouth swab and fingerprints are taken at the assessment centre for checks against national databases. BTP calls this "Biometric Vetting".
- Previous refusals. You are not eligible if you were declined or refused vetting in the last two years by BTP or any other police force, the NCA, the CNC or MOD.
See our how to join BTP guide for the full process.
Police Scotland: full vetting at the final stage
Police Scotland's recruitment pages describe force vetting rather than national security vetting:
- When. "Vetting checks are carried out once you have successfully completed the application process." The Force Vetting Unit "may on occasion make an early assessment of vetting suitability", case by case.
- Declarations. You declare criminal convictions and tattoos on the application. Police Scotland says each case is considered on its own merits and the vetting unit makes checks at the pre-appointment stage.
- Residency. You must have lived in the UK for at least three years.
- Nationality. Applicants who are not UK or EEA nationals must hold indefinite leave to remain or equivalent status when they apply; time-limited visas do not qualify.
- National security level. None is published for new constables on the pages we read.
- Transferees. Serving officers transferring in go through background and reference checks that include Professional Standards and vetting.
Our Police Scotland section has a dedicated Police Scotland vetting guide and a guide to its finance and debt rules.
National Crime Agency: SC for every officer
The NCA is not a police force and has no constable entry route, but it comes up often alongside these forces. Its pre-employment checks page is explicit:
- SC minimum. "All NCA Officers must hold a minimum national security clearance (SC)."
- DV for some roles. Roles that need Developed Vetting are clearly marked.
- Residence. At least 3 of the past 5 years in the UK for SC and at least 7 of the past 10 years for DV. Time posted abroad with HM Government or the military can still count.
- Other checks. Pre-employment substance misuse testing for all successful applicants, plus enhanced checks against organised crime data.
- NCA Enhanced Vetting. The NCA runs its own enhanced vetting on top of national security vetting. We have only seen the title of its explainer, so we do not describe it.
Routes into the NCA, its selection and its pay bands are in our NCA officer routes guide.
Nationality rules sit alongside vetting
Nationality is an entry rule rather than a vetting finding, but for forces with national security vetting the two are closely linked. What each force publishes:
| Force | Rule |
|---|---|
| MOD Police | Sole British National with a valid British Passport. Dual nationals and foreign nationals cannot be accepted. |
| Civil Nuclear Constabulary | Framed as vetting: you must achieve police and National Security Vetting. Shortlisting uses nationally approved criteria including nationality and right to work. |
| National Crime Agency | Normally only nationals of the UK, Republic of Ireland, the Commonwealth and the European Economic Area. |
| British Transport Police | The permanent right to live and work in the UK without restrictions; BTP cannot support visa applications. |
| Police Scotland | Non-UK and non-EEA nationals need indefinite leave to remain or equivalent status at application. |
| PSNI | Eligible to work permanently in the UK. UK and Irish nationals qualify; others need indefinite leave to remain. |
For the wider picture across England and Wales, see our guide to police nationality and residency requirements.
Residency rules compared
Residency is where national security vetting most often bites, because the checks need a period of history in the UK that can actually be checked. The forces set it differently:
| Force | Rule | Hard rule? | Exceptions and notes |
|---|---|---|---|
| MOD Police | At least 5 years living continuously in the UK before applying, with no more than 6 months' total absence. 10 years for postings to DV sites. | Yes: GOV.UK says the rule "is not flexible and is strictly applied" | Time abroad in the British Armed Forces or on UK Government service counts as UK residency. Short holidays do not count as time outside the UK. |
| Civil Nuclear Constabulary | An "expectation" of UK residence "for a period of up to 10 years, depending on the vetting level required" | No: not meeting it "does not preclude an application" | Extra checks may include police certificates from other countries, full overseas travel history, checkable employment history and references plus a certificate of good conduct. No guarantee vetting will be achieved. |
| National Crime Agency | At least 3 of the past 5 years in the UK for SC; at least 7 of the past 10 years for DV | Stated as a requirement | Time posted abroad with HM Government or the military can still count. |
| British Transport Police | Lived continuously in the UK for the last three years immediately before application | Breaks are reviewed case by case | Serving abroad with HM Forces or Government is excepted. Applies regardless of nationality. |
| Police Scotland | Have lived in the UK for at least three years | Stated as an eligibility rule | The officer page does not add "immediately prior" (the rejoiner page does). |
| PSNI | No residency requirement to apply; vetting needs a checkable three-year history | No minimum years in the UK | If you lived outside the UK or Republic of Ireland in the last 3 years you may need criminal record certificates from those countries. |
Three practical points from the table:
- MOD Police is the strictest. Five years with no more than six months away, ten for DV sites, applied strictly. A gap year abroad inside the last five years could be enough to rule you out of the MDP now.
- Service abroad usually counts. MOD Police, the NCA and BTP all treat time abroad in the Armed Forces or on government service as UK residence.
- The CNC and PSNI look at whether your history can be checked. Neither treats time abroad as an automatic bar, but both may ask for overseas criminal record certificates and the CNC may ask for much more.
Our guide to overseas travel and residency in police vetting covers how time abroad is handled in England and Wales and what evidence helps.
What you will be asked
The forms differ by force but the ground they cover is similar. Built from what each force says it asks for or checks:
| Topic | What the forces say | Forces |
|---|---|---|
| Every address you have lived at | BTP's vetting sheet: RV needs a full 3 years of UK address history, MV 5 years. PSNI: a checkable three-year history. | BTP, PSNI |
| Family, partners, co-residents and associates | BTP checks police data and address history for family, co-residents and associates. PSNI checks your "wider family circle and other associates". The CNC form asks about family. | BTP, PSNI, CNC |
| All contact with the police | CNC: any interaction, "even as a witness or if you were spoken to in the street". MDP: any contact as victim, suspect or witness plus dealings with Military Authorities. | CNC, MDP |
| Convictions and cautions, spent or not | BTP: declare all, including spent ones. PSNI: all convictions including spent ones, adult cautions, Community Resolution Notices and more. CNC: convictions, cautions, bind-overs, traffic offences, NFA matters and juvenile convictions. | BTP, PSNI, CNC |
| Your finances | MDP: financial information for security vetting. BTP: financial data. PSNI: explain your circumstances in the first vetting questionnaire. CNC: your financial position. | MDP, BTP, PSNI, CNC |
| Social media and email accounts | BTP asks for your social media URLs. PSNI asks for email and social media accounts. MDP: accounts, including unused ones, must comply with the Police Code of Ethics. | BTP, PSNI, MDP |
| Business interests | CNC: call recruitment if you or a relative have certain business interests or licences. Police Scotland: notify any business interest. | CNC, Police Scotland |
| Memberships | MDP: no BNP, Combat 18, National Front or similar. CNC: no current or past BNP or similar. PSNI: notifiable memberships under section 51 of the Police (Northern Ireland) Act 2000 apply from attestation. | MDP, CNC, PSNI |
| Biometrics | BTP takes a DNA mouth swab and fingerprints at the assessment centre ("Biometric Vetting"). The CNC takes fingerprints in your first week, for elimination purposes. | BTP, CNC |
The common thread is completeness. MOD Police says failure to disclose usually means rejection. The CNC asks you to declare matters marked no further action and juvenile convictions. If you are unsure whether something counts, declare it and explain.
How long national security vetting takes
Few forces publish a figure. Everything we found:
| Force | What is published | Source |
|---|---|---|
| Civil Nuclear Constabulary | Security vetting "can take up to three months" and is "the most time consuming part of the application process". Military and police service checks can also take up to three months. GOV.UK says the CNC aims to have you in post five to eight months from your first application. | CNC application process page; GOV.UK Working for CNC |
| PSNI | No time estimate, because Police Vetting and National Security Vetting are separate processes. You must return both questionnaires within two weeks of receiving them. | PSNI 2026 Guidance for Applicants; Join PSNI FAQs |
| MOD Police | Not published. SC starts at stage 4, after the interviews; DV is processed only after your station allocation is confirmed and SC is granted. | MDP recruitment process page |
| British Transport Police | Not published. BTP says the process "can be fairly lengthy"; vetting forms are sent only once you have a target start date and conditional offers can sit in a pool for up to 12 months. | BTP application guidance, FAQs and adverts |
| Police Scotland | Not published. Vetting runs once you have completed the application process; the Force Vetting Unit may occasionally make an early assessment. | Police Scotland recruitment process page |
| National Crime Agency | Not published on the pre-employment checks page we read. | NCA pre-employment checks page |
For general timings across England and Wales and why some cases take longer, see how long police vetting takes. Our recruitment timeline planner can help you plan the months between application and a start date.
What causes delays
The forces do not publish delay statistics, but their own rules point to the usual causes:
- Late forms. The PSNI gives two weeks to return both questionnaires and may discontinue an application if they are late.
- Missing information. The PSNI's Service Vetting Unit normally makes two emails and one phone call when information is missing. Gaps in addresses, dates or family details slow everything.
- Time abroad. Police certificates from other countries, overseas travel history and good conduct certificates (CNC) or criminal record certificates (PSNI) all take time to obtain.
- Previous service checks. The CNC says military and police service checks can take up to three months.
- A second clearance. At MOD Police, DV is processed only after SC is granted and your station is confirmed, so a DV posting adds a further stage.
- An open investigation. At the PSNI, being under investigation or on police bail stops vetting altogether until the matter is finalised.
- Waiting for a start date. BTP sends vetting forms only when it has a target start date for you, so vetting may not begin until well after your conditional offer.
Money and debt: what the forces publish
National security vetting looks closely at finances because of the risk of financial pressure or corruption. The CNC puts it plainly: officers "have access to privileged information that could potentially leave them vulnerable to corruption". The published rules:
| Force | Rule |
|---|---|
| MOD Police | Not bankrupt with outstanding debts; at least 3 years since any bankruptcy discharge (same for Scottish Trust Deeds); no outstanding County Court Judgments. A current IVA or Debt Management Plan is acceptable if you can show you are managing repayments. |
| British Transport Police | A current CCJ, an unmanaged IVA or a recent bankruptcy or Debt Relief Order will stop you. BTP's documents give three years since discharge (and in one place five). |
| Police Scotland | Rejected if currently in a Trust Deed or less than 12 months since discharge; if previously sequestrated or bankrupt and less than 3 years have passed; or with defaulted accounts totalling £1,000 or more. |
| PSNI | No fixed rule. "Particular consideration" for outstanding CCJs, a current IVA, a debt management plan, significant defaults, undischarged bankruptcy debts, declined credit or default notices. |
| Civil Nuclear Constabulary | No thresholds published. You must show you "can manage your loans and debts sensibly"; mortgages, student loans and card debt are fine if manageable. |
Debt itself is rarely the problem: the forces that publish detail all accept some debt that is managed. What the rules focus on is whether debt is managed, explained and declared. Our guide to joining the police with debt and the debt rules by force page cover England and Wales in more detail.
Family, partners and associates
Vetting looks at the people around you as well as at you. How far it reaches varies:
- PSNI: your wider family circle and other associates, partners from the last three years (including non-cohabiting and long-distance relationships) and anyone with links to criminal or paramilitary activity.
- BTP: police data and address history for family, co-residents and associates.
- CNC: the application form asks about family. The CNC also asks you to call recruitment if a relative (including a spouse) owns a shop or holds a liquor, betting, gaming or entertainment licence.
- Police Scotland: business interests include living where a family member keeps a shop in Scotland or a family member holding certain licences.
A relative's record does not automatically mean a refusal. What matters is the risk it creates and whether you declared it. See associates checks explained, a partner's criminal record and failing vetting because of family.
Social media and your online life
- MOD Police: your accounts, including unused ones, must comply with the Police Code of Ethics.
- PSNI: asks for email and social media accounts and may examine your outward-facing presence. Misogyny, racism, sexism, sectarianism or homophobia may lead to rejection.
- BTP: asks for your social media URLs and views only public content.
- CNC: one of its four vetting videos is about internet use.
Our guide to police vetting social media checks covers what reviewers look for and how to tidy old accounts without hiding anything.
If you are refused
| Force | What happens |
|---|---|
| PSNI | Written review by the Independent Assessor, then a final decision by the Chief Constable's Representative. No further appeal. |
| MOD Police | Refused police vetting can be appealed. If DV is not achieved for a first posting, you are offered another posting suited to your clearance, with no relocation expenses. |
| British Transport Police | A formal letter with appeal rights; the appeal decision is final. A refusal makes you ineligible for BTP for two years (BTP counts refusals by any police force, the NCA, the CNC or MOD too). |
| Civil Nuclear Constabulary | No review route is described on the recruitment pages we read. |
| Police Scotland | No review route is described on the recruitment pages we read. |
For how vetting appeals work in England and Wales, see how to appeal a police vetting decision and what happens if you fail vetting.
Once you are in: keeping your clearance
Vetting is not a one-off. Two forces publish clear rules for serving officers:
- MOD Police. The Ministry of Defence Police (Vetting) Regulations 2026 (SI 2026/428) came into force on 18 May 2026. Every MDP officer must "hold and maintain vetting clearance" and report changes in circumstances. The regulations also set out how clearance can be withdrawn.
- PSNI. You must report changes during vetting and throughout your career: relationships, name or address, new co-residents over 16, step-family changes, significant financial changes (a CCJ, debt management plan, IVA, default, bankruptcy or large sums received), arrests and proceedings, approaches from extreme political, religious or protest groups and new criminal associations.
Our police vetting renewal guide covers re-vetting in England and Wales.
How to prepare, honestly
Nobody can make you pass vetting and nobody outside the vetting unit knows how a particular case will be decided. What you can control is how complete, accurate and quick your answers are. PolicePay's general advice, built on what the forces publish:
- Check the hard rules first. For MOD Police: sole British nationality and five years' residence (ten for DV sites). For the NCA: 3 of 5 or 7 of 10 years. If you fall short, find out before you apply.
- Build your address history now. Every address with dates, going back at least three years (five or ten if you are aiming for MDP or DV posts).
- Document time abroad. Dates, countries and reasons. Find out how to request criminal record or good conduct certificates from each country.
- Get your credit file. Deal with or be ready to explain any default, CCJ or arrangement. Check it against the force's rules in the finance table above.
- List every police contact. Including as a witness or victim and anything that ended with no further action.
- Gather family and partner details. Names, dates of birth and addresses. The PSNI wants partners from the last three years.
- Review your online presence. Including accounts you no longer use.
- Watch the official material. The CNC's four vetting videos; the PSNI's 2026 Guidance for Applicants, which has a long section on vetting.
- Return forms fast. The PSNI's two-week deadline is the strictest we found, but speed helps everywhere.
- Do not move house or resign early. MOD Police warns against committing to a move before clearance for your posting is confirmed. BTP says do not resign until the formal offer.
Free tools on PolicePay that help with the police vetting layer: vetting stage checker, vetting impact checker and mock vetting interview. They are built around the England and Wales framework, but the areas they cover (finances, associates, convictions, honesty) are the same ones these forces look at.
Checklist before you apply
| Check | Why it matters | What to do |
|---|---|---|
| Nationality | MOD Police accepts sole British nationals with a valid British passport only | Check your passport and any second nationality before you apply |
| Residency | MDP: 5 years (10 for DV sites); NCA: 3 of 5 (SC) or 7 of 10 (DV); CNC: up to 10 expected; BTP and Police Scotland: 3 | List every period abroad with dates and the reason |
| Address history | BTP needs three years of UK addresses; PSNI a checkable three-year history | Write down every address with move-in and move-out dates |
| Overseas records | CNC and PSNI may ask for criminal record certificates from countries you lived in | Find out how to request them now; some take time |
| Finances | MDP, BTP and Police Scotland publish hard rules; PSNI and CNC look at how you manage debt | Get your credit file and deal with defaults or CCJs you did not know about |
| Police contact | CNC and MDP want every contact, including as a witness or victim | List incidents, dates and forces, even minor ones |
| Family and partners | PSNI wants partners from the last 3 years, including non-cohabiting ones | Gather names, dates of birth and addresses of close family and partners |
| Social media | Several forces ask for your accounts and review public content | Review old posts and unused accounts |
| Memberships and business interests | Some organisations bar you; some business interests need declaring | Note anything you or close relatives run or belong to |
| Housing plans | MDP: no relocation expenses if DV fails at your first posting | Do not commit to a house move until clearance for your posting is confirmed |
Common mistakes
- Assuming every force needs DV. Only MOD Police (for some sites) and the NCA (for marked roles) publish a DV requirement.
- Assuming no force needs more than police vetting. MOD Police needs SC for everyone and the CNC and PSNI require National Security Vetting.
- Missing the MDP nationality rule. Dual nationals cannot join MOD Police at all, including as transferees.
- Counting holidays wrongly. For MOD Police, short holidays do not count as time outside the UK, but travelling, studying, living or working abroad does.
- Assuming old clearance carries over. BTP says vetting from another force or employer typically does not transfer.
- Leaving out a partner. The PSNI's partner rules cover non-cohabiting and long-distance relationships and former partners from the last three years.
- Committing to a house move. At MOD Police, a DV posting depends on DV being granted and there are no relocation expenses if it is not.
- Sitting on the forms. The PSNI may discontinue an application if questionnaires are not back within two weeks.
- Talking about it publicly. The PSNI asks applicants to be discreet about their application for their own security.
What we could not verify
- The CNC's national security level for a new AFO. No current CNC page names CTC, SC or DV for a new constable; it says the level depends on the role.
- The PSNI's national security level. The pages and guidance we read call it National Security Vetting and use an HM Government Security Questionnaire, but do not name the level.
- BTP's vetting level in terms. RV is implied by BTP's three-year residency rule and its vetting sheet, but no BTP page says constables are vetted to RV.
- Police Scotland and national security vetting. Its recruitment pages describe force vetting only; we found no published national security level for new constables.
- MOD Police timings. The MDP does not publish how long SC, DV or the whole process takes.
- The full list of MDP DV sites. The MDP names AWE, Menwith Hill and RNAD Coulport as examples only.
- NCA Enhanced Vetting. We have only seen the title of the NCA's explainer.
- Pass rates. None of these forces publishes vetting pass or refusal rates for applicants.
Frequently Asked Questions
Do you need SC clearance to join the police?
It depends on the force. MOD Police says all new entrants must obtain SC clearance as a minimum. The CNC and PSNI both require National Security Vetting on top of police vetting but do not name the level on the pages we read. BTP describes its own baseline vetting for new constables and states no SC or CTC requirement. Police Scotland publishes no national security vetting level for new constables. For the 43 Home Office forces see our vetting levels guide. Checked 23 October 2026.
Does MOD Police need DV?
Only for some postings. Every new MDP entrant needs SC as a minimum. Developed Vetting is required for posts at specific sites, such as AWE, Menwith Hill or RNAD Coulport. The MDP processes DV after your station allocation is confirmed and SC has been granted. If you do not achieve DV for your first posting, the MDP says you would be offered another posting suited to the clearance you achieved, with no entitlement to relocation expenses.
What residency do you need for MOD Police vetting?
At least 5 years living continuously in the UK before applying, with no more than 6 months' total absence. For postings to DV sites such as AWE, Menwith Hill or RNAD Coulport this rises to 10 years. Time abroad in the British Armed Forces or on UK Government service counts as UK residency and short holidays do not count as time away. GOV.UK says the rule is not flexible and is strictly applied.
Can dual nationals join MOD Police?
No. The MDP says you must be a sole British National holding a valid British Passport and that dual nationality or foreign nationals cannot be accepted. The same rule applies to officers transferring in from other forces (the MDP calls them New Entrants from Other Forces).
What vetting does the Civil Nuclear Constabulary need?
Both police vetting and National Security Vetting. The CNC says the type of vetting depends on the role and does not publish which national security level a new constable needs. It expects applicants to have lived in the UK for up to 10 years depending on the vetting level, but says not meeting that does not stop you applying. Security vetting starts after you accept a conditional offer and can take up to three months.
What is PSNI National Security Vetting?
The PSNI runs Police Vetting and National Security Vetting as two separate processes. You fill in a Part 1 Vetting Questionnaire and a Part 2 HM Government Security Questionnaire and must return both within two weeks. The checks cover you, your wider family circle and other associates. Because there are two processes, the PSNI gives no time estimate.
Can I appeal a PSNI vetting refusal?
You can ask for a review, once. If the Vetting Panel finds you unsuitable, you can request a written review by the Independent Assessor. The review goes to the Chief Constable's Representative (a Chief Superintendent or above), who makes the final decision. The PSNI says there is no further appeal process.
Does BTP need SC or CTC vetting?
BTP does not say so for new constables. Its guidance describes "our own baseline vetting", run by its own vetting unit. Its vetting sheet says Recruitment Vetting needs a full three years of UK address history, which matches the three-year residency rule. BTP says some roles need higher vetting and that you are told at application.
Does Police Scotland need national security vetting?
Police Scotland's recruitment pages describe full vetting by its Force Vetting Unit at the final stage, once you have completed the application process. They do not name a national security vetting level for new constables. You must have lived in the UK for at least three years.
How long does national security vetting take for police applicants?
Only the CNC publishes a figure: security vetting can take up to three months, within a whole process it aims to finish in five to eight months from first application. The PSNI gives no estimate because its two vetting processes are separate. MOD Police, BTP and Police Scotland do not publish vetting times.
I have lived abroad. Can I still pass?
It depends on the force and how long you were away. MOD Police's residency rule is strict: 5 years in the UK with no more than 6 months away (10 years for DV sites), though Armed Forces and UK Government service abroad counts. The CNC says not meeting its expectation does not stop you applying but may mean police certificates from other countries and a full overseas travel history. The PSNI may ask for criminal record certificates from countries you lived in during the last three years.
Does the NCA need SC clearance?
Yes. The NCA says all NCA officers must hold a minimum national security clearance of SC and that some roles need Developed Vetting, which are clearly marked. It asks for at least 3 of the past 5 years in the UK for SC and at least 7 of the past 10 years for DV. It also runs its own NCA Enhanced Vetting.
Will clearance I already hold from another job carry over?
Do not assume so. BTP's FAQs answer "Typically, no" when asked whether vetting from another force or employer transfers. MOD Police starts your SC application itself during recruitment. Our vetting levels guide explains why police-sponsored national security clearance rests on police vetting.
Sources and how we checked them
Every factual claim on this page was written from the sources below, read on 23 October 2026. Rules and figures change, so check the source for the date you are reading this. Where we could not confirm something from an official or independent source, the page says so rather than guessing. Spotted something out of date? See our corrections policy.
- MOD Police: New Recruit entry criteria : sole British nationality; 5 and 10-year residency; DV site examples; finances; prohibited organisations (accessed 23 October 2026)
- MOD Police: NEOF entry criteria : same nationality and residency rules for officers transferring in (accessed 23 October 2026)
- MOD Police: UK Security Vetting (UKSV) : SC minimum for all new entrants; what SC and DV include; DV needed for some sites; no relocation expenses if DV fails; CTC not mentioned (accessed 23 October 2026)
- MOD Police: Police Vetting : College of Policing Vetting Code of Practice and APP; open-source and national police systems checks; social media; disclosure; appeal; US Visiting Forces bases (accessed 23 October 2026)
- MOD Police: New Recruit recruitment process : stage 4 medical, fitness, SC and police vetting; DV after station allocation and SC (accessed 23 October 2026)
- GOV.UK: Ministry of Defence Police entry requirements (updated 27 March 2025) : "immediately prior to your application"; residency "not flexible and is strictly applied" (accessed 23 October 2026)
- Ministry of Defence Police (Vetting) Regulations 2026 (SI 2026/428) : in force 18 May 2026; officers must hold and maintain vetting clearance and report changes; withdrawal of clearance (accessed 23 October 2026)
- CNC careers: Police officers : police and National Security Vetting; residency expectation of up to 10 years; extra overseas checks; declarations; finances; BNP rule; business interests (accessed 23 October 2026)
- CNC careers: Applying for a role : vetting after conditional offer; up to three months; most time consuming part; type depends on role; fingerprints in first week (accessed 23 October 2026)
- CNC careers: Police officer transferees : nationally approved eligibility criteria; PSD complaints and misconduct check for transferees (accessed 23 October 2026)
- GOV.UK: Working for CNC : five to eight months from first application to in post (accessed 23 October 2026)
- CNC FOI 272 (3 November 2021): vetting : UKSV plus police recruitment vetting since 2008; police part by Thames Valley Police; pre-2008 officers vetted to DV or SC (accessed 23 October 2026)
- CNC advert 735, Police Constable AFO Garlogie 2026 : links to four CNC vetting videos (overview, finances, life experiences, internet use) (accessed 23 October 2026)
- PSNI Constable Recruitment 2026 Guidance for Applicants, Campaign 2610 (PDF) : Part 1 and Part 2 questionnaires; two-week return; two separate processes; associations; finances; social media; Risk Management Agreements; Vetting Panel and Independent Assessor; changes to report (accessed 23 October 2026)
- Join PSNI: Help and FAQs : wider family circle and associates; partners to declare; residency; no further appeal (accessed 23 October 2026)
- Join PSNI: How do I join? : vetting as a PSNI-managed stage; checkable three-year history (accessed 23 October 2026)
- Join PSNI: Can I join? : right to work; convictions that bar appointment (accessed 23 October 2026)
- Join PSNI: Your security : discretion about your application (accessed 23 October 2026)
- Police (Recruitment) (Northern Ireland) Regulations 2001 (as made) : legal framework for the vetting panel and Independent Assessor (accessed 23 October 2026)
- BTP careers: Application guidance : "our own baseline vetting"; offer after security checks (accessed 23 October 2026)
- BTP careers: FAQs : vetting after conditional offer; previous vetting "Typically, no" transfers; appeal decision final; process can be lengthy (accessed 23 October 2026)
- BTP careers: Police Officer (Full Time) : three-year UK residency; biometric vetting at the assessment centre (accessed 23 October 2026)
- BTP careers: Transferees : some roles need higher vetting (accessed 23 October 2026)
- BTP advert 1746 (posted 16 September 2026) : no vetting refusal in the last two years by BTP, any police force, NCA, CNC or MOD; finance bars; conditional offer pool up to 12 months (accessed 23 October 2026)
- BTP Vetting Top Tips (PDF attached to BTP adverts) : RV needs 3 years of UK address history, MV 5 years; what is checked for you and for family, co-residents and associates; social media URLs; finances (accessed 23 October 2026)
- Police Scotland: Our recruitment process : final stage full vetting; early assessment by the Force Vetting Unit; declarations checked at pre-appointment (accessed 23 October 2026)
- Police Scotland: Apply to become a police officer : three years in the UK; indefinite leave to remain for non-UK and non-EEA nationals (accessed 23 October 2026)
- Police Scotland: Offences that mean you'll be rejected : Trust Deed, sequestration and default rules (accessed 23 October 2026)
- Police Scotland: Transferees : transferee checks include Professional Standards and vetting (accessed 23 October 2026)
- NCA: Pre-employment checks : SC minimum; DV for marked roles; 3 of 5 and 7 of 10 years; substance misuse testing; organised crime checks (accessed 23 October 2026)
- NCA: How to join the NCA : nationality; age; time abroad before applying (accessed 23 October 2026)
- NCA: What is NCA Enhanced Vetting : title only seen (accessed 23 October 2026)
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Disclaimer
PolicePay.co.uk is an independent guide. It is not affiliated with British Transport Police, the Civil Nuclear Constabulary, the Ministry of Defence Police, the Police Service of Northern Ireland, the National Crime Agency, the Isle of Man Constabulary, the States of Jersey Police, Guernsey Police, any port police force, Deloitte, the College of Policing or any other force and it does not recruit, vet or assess applicants. Each force sets and changes its own recruitment process, sometimes between campaigns: check the force's own recruitment pages and your invitation before relying on anything here. Our practice questions are original PolicePay material, not questions used by any force. Details are as checked on 23 October 2026.