If you have been cautioned for a recordable offence then it will be recorded on the Police National Computer and will form part of your criminal record. You can find out what's been recorded about you on the PNC by applying for a copy of your police records. This process is known as a Subject Access Request (SAR).
Then, how long does a police caution last for?
Secondly, does a police caution show on a DBS check?
Protected convictions or cautions are convictions or cautions which are filtered during the DBS check process - this means that they will not appear on the DBS certificate. Following this court case, the law was changed, and now certain types of conviction or caution will not appear on your DBS check. Also question is, how is a police caution given?
A caution is a formal warning issued by police to someone who has admitted to having committed a criminal offence. Cautions are issued at the discretion of police, and enable a sanction to be given without going before the courts.
Do you have to declare a caution?
Once a conviction, caution, reprimand or final warning becomes spent, you do not need to disclose it to most employers, or when applying for most courses, insurance or other purposes (e.g. applying for housing).