NOMS Number

1 November 2021

To identify a particular person by their prisoner (or National Offender Management Service) number. Note that prisoner number is not necessarily unique and permanent.

The current prisoner number is 6 characters, of three possible formats:
NNNNNN

OR
ANNNNN where A can be A to H, J to N, P, R, T, V, W

OR
AANNNN where AA can be a combination of A to H, J to N, P, R, T, V,
W, X

The new NOMIS prisoner number (c.2007) will be 6 characters in the format ANNNNAA
where A can be A, C to H, J to N, P to R, T, V to Z and where AA can be a combination of A, C to H, J to N, P to R, T, V to Z