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Criminal records are kept by the police to retain information on an individual’s criminal history. This article looks at what information police retain and how to apply for the removal of a criminal record. It also explains what a criminal record check is and when they are carried out.

What criminal record information do the police retain and for how long?

Criminal records information is held on two main systems, the Police National Computer (PNC) and Police National Database (PND).

The Police National Computer (PNC)

The PNC records details of convictions, cautions, reprimands, warnings and arrests. An individual’s record on the PNC is retained until their 100th birthday.

The Police National Database (PND)

The PND records “soft” local police intelligence, for example, details of investigations that did not lead to any further action.

Intelligence on the PND will generally be retained for a minimum of six years; longer if it relates to allegations of a serious offence or if the individual concerned is considered to pose an ongoing risk.

How can an individual apply to have a criminal record on the PNC deleted?

Chief constables “own” the data that their force has entered onto the PNC. They can exercise their discretion, in exceptional circumstances, to delete non-court disposals (such as cautions) which are owned by them and held on the PNC, as well as any non-conviction outcome.

Individuals can apply for the removal of a record from the PNC through the ‘Record Deletion Process’.

Individuals can apply for the removal of a record from the PNC through ACRO Criminal Records Office, a national police unit.  The National Police Chiefs’ Council (NPCC) has issued guidance on the Record Deletion Process (PDF). It says that there is no set criterion for the deletion of records and that it is for Chief Officers to exercise professional judgement based on the information available. To request a deletion, individuals should contact ACRO via email at:

Applicants for deletion of a PNC record must base their application on the grounds set out in NPCC guidance. The guidance gives examples of circumstances in which deletion should be considered by a Chief Officer. These include:

  • No Crime: Where it is established that a recordable crime has not been committed. For example, a sudden death where an individual is arrested at the scene and subsequently charged, but after post-mortem it is determined that the deceased person died of natural causes and not as a result of homicide.
  • Malicious/False Allegation: Where the case against an individual has been withdrawn at any stage and there is corroborative evidence that the case was based on a malicious or false allegation.
  • Proven Alibi: Where there is corroborative evidence that the individual has a proven alibi and as a result, are eliminated from the enquiry after being arrested.
  • Suspect status not clear at the time of arrest: Where an individual is arrested at the outset of an enquiry, the distinction between the offender, victim and witness is not clear, and the individual is subsequently eliminated as a suspect (but may be a witness or victim).

Note that individuals with a court conviction cannot apply to have their records deleted under the records deletion process. Neither can an individual apply where an investigation into them, or court proceedings against them, remain ongoing.

What is a criminal records check and in what circumstances are they carried out?

A DBS (Disclosure and Barring Service) check is a way for employers to check a person’s criminal record and may be requested as part of their recruitment process. There are different levels of DBS checks, which may show spent or unspent convictions.

Under the Rehabilitation of Offenders Act 1974, cautions, reprimands and warnings and some convictions become “spent” after a certain period. Once a record becomes spent it does not usually need to be declared to employers or voluntary organisations.

However, if a person applies for a so-called “excepted position”, then the prospective employer is entitled to ask for details of both spent and unspent convictions, cautions, reprimands and warnings by way of a criminal records check conducted by the Disclosure and Barring Service (DBS). Excepted positions cover (for example) work with children or vulnerable adults, roles in certain licensed occupations or positions of trust.

What is disclosed in a criminal records check?

Four types of checks are issued by the DBS: basic, standard, enhanced, and enhanced with barred list. The charity Unlock has published an A-Z of job roles with the likely level of criminal record check required for each of them.

  • A basic check shows unspent convictions and conditional cautions.
  • A standard check contains details of all spent and unspent convictions, adult cautions, reprimands and final warnings (as held on the PNC) except those which, under the filtering rules (see below), should no longer be disclosed.
  • An enhanced check includes the same information as a standard check together with local police intelligence. Local police intelligence could include details of any fixed penalty notices, penalty notices for disorders, findings of innocence, acquittals or cautions and convictions of those that you live with. 
  • An enhanced with barred list check includes the same information as an enhanced check together with details of whether the individual concerned is on the lists maintained by the DBS of those barred from working with children and/or vulnerable adults.

The “filtering rules”

Some PNC information relating to old and minor convictions is not disclosed on a DBS check. The information is “filtered out” under rules referred to as the “filtering rules”.

The “filtering rules” are as follows:

For those aged 18 or over at the time of the offence

An adult conviction will be removed from a DBS certificate if:

  • 11 years have elapsed since the date of conviction; and
  • it did not result in a prison or suspended sentence; and
  • the conviction is not one that is listed as a specified offence, which will always appear on a DBS check.

An adult caution will be removed after 6 years have elapsed since the date of the caution, so long as it is not for a specified offence.

For those aged under 18 at the time of the offence

  • The same rules apply as for adult convictions, except that the elapsed time period is 5.5 years.
  • Youth cautions, reprimands and final warnings will be automatically filtered from standard and enhanced checks immediately, even for specified offences.

Non-conviction information

The two types of enhanced checks provide details of relevant and proportionate non-conviction information. Disclosure of such information is not automatic but is done on a case-by-case basis following the exercise of police discretion. The test the police use when deciding whether to disclose non-conviction information is whether the chief officer “reasonably believes it to be relevant” for the check.

There is a statutory code designed to assist chief officers of police in making decisions about providing information from local police records for inclusion in enhanced criminal record certificates.

There is an appeal process available if an applicant believes that incorrect or irrelevant information on convictions has been included. Further information on this process may be found on GOV.UK: DBS checks (previously CRB checks): Appeals and disputes.

Contacting the Disclo​​sure and Barring Service

Constituents may contact DBS customer services using the details provided on GOV.UK: Contact the Disclosure and Barring Service.

Members and their staff may use the details given in Hotlines for MPs (PDF), compiled by the organisation W4MP. This content is restricted to users with a Parliamentary account and these numbers are for the use of Members and their staff only.

Sources of support

The information on this page about disclosure relates to England and Wales. For information about the disclosure scheme in Scotl​and see the Disclosure Scotland website. For information about criminal record checks in Northern Ireland see AccessNI on the Northern Ireland government services website.

Further information


The Commons Library does not intend the information in this article to address the specific circumstances of any particular individual. We have published it to support the work of MPs. You should not rely upon it as legal or professional advice, or as a substitute for it. We do not accept any liability whatsoever for any errors, omissions or misstatements contained herein. You should consult a suitably qualified professional if you require specific advice or information. Read our briefing for information about sources of legal advice and help.