With a crb check on myself how long would a theft offence last?

Criminal Records Bureau (CRB) checks were replaced by Disclosure and Barring Service (DBS) checks in 2012. Individuals are unable to obtain DBS checks by themselves as they have an employer with legal entitlement to request one. Cautions for offences that are on the 'DBS list of offences that will never be filtered' will show up forever.

Caution not on that list will stop showing once 6 years have passed (2 years if you were under 18 at the time of caution).