The short answer: not a bar, but nothing stays hidden
In shortA conviction does not necessarily bar you, but you must declare everything required and HMPPS checks it against police records.
Many readers arrive here worried about one thing from their past. The careers site says a conviction does not necessarily bar you from working for HMPPS, and the vetting policy confirms that criminal history is assessed rather than treated as an automatic fail.
What the policy does not allow is selective honesty. You must declare everything you are required to declare, and HMPPS checks it against police records.
- Already applied?
- This guide is about the question 'can I?'. If you have already applied and want to understand what a vetting refusal means, read our guides on failed vetting and vetting and criminal records. Nothing here is legal advice; if your case is complicated, speak to an independent advice service or a solicitor before you apply.
Two features that make this role different
Exempt from spent-conviction rules
- A conviction from many years ago may still count
Risk in a custodial setting
- Staff have power over vulnerable people, access to keys and sensitive information, and exposure to attempts at corruption
- That is why the vetting is described as 'enhanced', and why a single honest declaration is more useful than any attempt to minimise it
How the Rehabilitation of Offenders Act normally works
In shortThe standard rehabilitation periods describe the baseline, but for a prison officer application the baseline is not the rule.
The Rehabilitation of Offenders Act 1974 lets most convictions and cautions become 'spent' after a rehabilitation period. Once spent, you generally do not have to mention them to employers. The periods were shortened for England and Wales from 28 October 2023.
For ordinary jobs, once your conviction is spent you can truthfully say you have none. That protection is the reason the Act exists: to help people move on after they have served their sentence.
- Custodial sentence of one year or less: spent 12 months after the sentence is completed.
- One to four years: four years after completion.
- Over four years: seven years after completion, unless it falls into the excluded categories.
- Fines are spent 12 months from conviction; absolute discharges and simple cautions are spent immediately.
- Conditional cautions: after three months or when they cease to have effect if earlier.
| Sentence or outcome | Period before it is spent |
|---|---|
| Custodial sentence of up to and including 1 year | 12 months from the end of the sentence |
| Custodial sentence over 1 year, up to 4 years | 4 years from the end of the sentence |
| Custodial sentence over 4 years (non-excluded) | 7 years from the end of the sentence |
| Fine | 12 months from conviction |
| Absolute discharge | Spent immediately |
| Simple caution | Spent immediately |
| Conditional caution | 3 months, or when it ceases to have effect if earlier |
| Life or public protection sentences | Never spent |
Periods are shorter if you were under 18 at conviction. This table is a summary of the GOV.UK guidance; check the full guidance for your sentence.
Why prison officer roles are exempt
In shortMost HMPPS roles are exempt from the Act, so spent as well as unspent convictions must be declared unless DBS filtering protects them.
The Rehabilitation of Offenders Act (Exceptions) Order 1975 removes the spent-conviction protection for certain professions and roles, mainly those involving work with vulnerable people, the administration of justice or national security. Most HMPPS roles fall within it.
- Lived Experience policy framework
- States that most HMPPS roles are exempt from the Act, so applicants must declare spent as well as unspent convictions and cautions unless they are filtered under the DBS rules.
- Vetting policy (PSI 07/2014, revised 20 February 2025)
- Says the Enhanced Check Level 2 includes a criminal record check covering spent and unspent convictions, subject to filtering.
Two ways to think about an old conviction
Shop or office job
- A spent conviction may be left unmentioned
Prison officer post
- The same conviction may still be asked about, checked and considered
- Advice such as 'it was ten years ago so you do not have to mention it' can be wrong for this role
DBS filtering: what is protected
In shortDBS filtering stops some old, minor matters appearing on certificates, but unspent matters, custodial sentences and specified serious offences are always disclosed.
Disclosure and Barring Service (DBS) filtering stops some old, minor matters appearing on standard and enhanced certificates even for exempt roles. The GOV.UK filtering guide explains that unspent convictions and cautions are always disclosed, and that any conviction that resulted in a custodial sentence is always disclosed, however long ago.
- A spent non-specified caution given at 18 or over is disclosed for less than six years.
- A spent non-specified conviction at 18 or over is disclosed for less than eleven years.
- A non-specified conviction under 18 is disclosed for less than five and a half years.
- Youth cautions, warnings and reprimands are not disclosed automatically.
- Offences on the specified list (serious violent and sexual offences and offences relevant to safeguarding) are never filtered whatever the age or time.
- The old 'multiple convictions' rule has been removed, so each conviction is considered against the rules individually.
| Type of matter | Disclosed | Filtered |
|---|---|---|
| Unspent conviction or caution | Always | Never |
| Conviction with a custodial sentence | Always | Never |
| Spent non-specified conviction (18+) | If less than 11 years ago | After 11 years, if no custodial sentence |
| Spent non-specified caution (18+) | If less than 6 years ago | After 6 years |
| Specified (serious) offence | Always | Never |
| Youth cautions, warnings, reprimands | Not disclosed automatically | Protected, with limited exceptions |
A summary of the DBS filtering guide on GOV.UK. Individual cases can have extra rules; check the full guide.
What you must declare, and what happens if you do not
In shortDeclare everything required, accurately and early: non-disclosure is likely to mean refusal with no leave to re-apply for 12 months.
The careers site tells applicants to declare all convictions, cautions and absolute or conditional discharges, regardless of age, subject to DBS filtering. List your record accurately: the offence, the date, the outcome and the court or force.
If you do not know, you can ask the police for a record of your own convictions; check GOV.UK for the current way to do this.
- Declare convictions, cautions and absolute or conditional discharges regardless of age, unless DBS filtering protects them.
- Spent matters can still be checked for this role because it is exempt from the Rehabilitation of Offenders Act.
- Non-disclosure is likely to mean refusal with no right to reapply for 12 months.
- The online security questionnaire for high security posts must be completed within 15 working days or the application is closed.
- Once appointed, you must report criminal charges and certain other changes in circumstances.
Why honesty works in your favour
Declared
- A matter that might be accepted when declared can be accepted
Hidden
- The vetting policy (para 2.11) says non-disclosure is 'likely to lead to their application being refused with no leave to re-apply for 12 months'
- The careers site says failing to disclose will halt your application
How decisions are made: judgement, not a published list
In shortNo list of ruled-out offences is published: cases are judged individually by the Approvals and Compliance team, which means uncertainty.
People often ask which offences rule you out. For a standard prison officer application the honest answer is that no list is published. Where judgement is needed, the vetting policy says the Approvals and Compliance team decides suitability and also handles representations against a refusal.
The careers site's wording that a conviction 'does not necessarily' bar you is as specific as the published guidance gets.
- The Exclusion List records people previously excluded from HMPPS roles.
- The Individual Insolvency Register is checked for bankruptcy.
- If a past dismissal from a public-sector job or a debt issue sits alongside a conviction, see our guides on vetting and debt and family members in prison.
Judgement rather than a list
Benefit
- Your case is looked at individually rather than refused by a rule that ignores context
Cost
- You cannot look up your offence and read off the answer
- Anyone who tells you with confidence that an offence will or will not be accepted is guessing
The Lived Experience framework and its exclusions
In shortThe Lived Experience route is for people who cannot get clearance because of their history, and its exclusion list is the clearest official sign of what HMPPS sees as incompatible with custody.
From 1 April 2026 HMPPS has a Lived Experience policy framework, issued on 5 March 2026, which replaced the earlier Standard Plus arrangements. It applies to people who cannot obtain Enhanced Check Level 1 or 2 clearance because of their criminal history.
It sets out role-specific risk management plans through the Going Forward into Employment route for directly employed posts and a separate route for non-directly employed posts. It covers staff in prisons, probation, youth settings and contracted services.
- Life sentences
- Arson
- Terrorism
- Offences under the Sexual Offences Act 2003
- Hate crimes
- Misconduct in public office or abuse of a position of authority
- Significant breach of trust or deception
- Stalking
- Firearms offences
- Offences against children
- False imprisonment and kidnapping
- Supplying controlled drugs within a prison
- Serious violent offences causing life-changing injury or trauma
Scotland publishes its criteria; England and Wales do not
In shortScotland publishes automatic-rejection criteria; England and Wales give flexibility at the price of uncertainty, and Northern Ireland's criteria were not retrievable.
The Scottish Prison Service is more explicit. Pre-employment checks involve a Level 2 Disclosure Scotland check or PVG scheme membership.
- The Scottish approach gives clarity at the price of firmness; the England and Wales approach gives flexibility at the price of uncertainty.
- Neither is a guarantee: if applying in both nations, read each set of criteria separately.
- Northern Ireland's criteria are in the NICS candidate booklet, which we could not retrieve, so we do not state them.
Scottish Prison Service eligibility page
Automatic rejection
- Serious offences such as murder, rape, kidnapping and firearms offences
- Violence-related convictions
- Dishonesty offences such as fraud, theft and burglary
- Any adult conviction that resulted in a prison sentence
Rejection likely, unless very compelling circumstances
- Class A drug possession or multiple Class B convictions
- Reckless or dangerous driving within the last 10 years
- Multiple drink-driving offences
What to do next: a practical plan
In shortEstablish what is on your record, compare it with the filtering rules and exclusions, then decide whether to apply before investing months.
If you decide to proceed, complete the application honestly, declare what is required and prepare for the pre-employment checks, which take 8 to 10 weeks.
- Obtain an accurate account of your own record: offences, dates, outcomes.
- Check each item against the DBS filtering guide to see whether it is likely to be protected.
- Compare your record with the Lived Experience exclusion list for the kinds of history HMPPS treats as incompatible.
- Take independent advice if your record is long, complex or includes offences involving dishonesty, violence or drugs.
- Apply, declare everything required and keep copies of what you submit.
- Complete the online security questionnaire promptly if you are applying to a high security prison.
Frequently asked questions
Can you be a prison officer with a criminal record?
A conviction does not automatically bar you, but you must declare all convictions, cautions and absolute or conditional discharges unless DBS filtering protects them. HMPPS assesses each case individually, and no list of acceptable offences is published for a standard application.
Are spent convictions checked for prison officer jobs?
Yes. Most HMPPS roles are exempt from the Rehabilitation of Offenders Act, so enhanced vetting covers spent and unspent convictions subject to DBS filtering. A conviction that would be spent for an ordinary job may still be considered.
Do I have to declare a caution?
Yes. The careers site says to declare convictions, cautions and absolute or conditional discharges regardless of age, subject to DBS filtering. Simple cautions are spent immediately under the Act but are still declarable for exempt roles unless filtered.
What happens if I do not declare a conviction?
The vetting policy says non-disclosure is likely to lead to refusal with no right to reapply for 12 months, and the careers site says it will halt your application. It is usually far worse than the offence itself.
Which offences automatically stop you being a prison officer?
No list is published for the standard route. The Lived Experience framework excludes offences such as sexual offences, terrorism, misconduct in public office, firearms and serious violence on that route. In Scotland, serious, violent and dishonesty offences are an automatic rejection.
Does DBS filtering mean I can ignore old convictions?
No. Filtering applies to what appears on a certificate. Convictions with custodial sentences and specified serious offences are never filtered, and you should check each item against the GOV.UK guide rather than assume.
Can I appeal if vetting refuses me?
The vetting policy says the Approvals and Compliance team deals with representations against a refusal. Ask for the reasons and the process in writing, and consider independent advice. See our guide on failed vetting for next steps.
Does a conviction under 18 count?
Youth cautions, warnings and reprimands are not disclosed automatically under DBS filtering, and rehabilitation periods are shorter for under-18 convictions. You should still check each item against the guidance, and declare if you are unsure.
Sources
- prisonandprobationjobs.gov.ukPrison and Probation Jobs: how to apply for a prison officer role
- assets.publishing.service.gov.ukHMPPS Security Vetting Policy Framework (PSI 07/2014, revised 20 February 2025)
- assets.publishing.service.gov.ukHMPPS Lived Experience Policy Framework (issued 5 March 2026, effective 1 April 2026)
- gov.ukGOV.UK: rehabilitation periods
- gov.ukGOV.UK: DBS filtering guide
- sps.gov.ukScottish Prison Service: eligibility