An inspector (other than a member of a police force who is in uniform) who proposes to enter premises under section 547A must:
(a) in the case of a member of a police force--produce, for inspection by the occupier of the premises, written evidence of the fact that the inspector is a member of a police force; or
(b) in any other case--produce the inspector's identity card for inspection by the occupier;
and, if the inspector fails to do so, he or she is not authorised to enter the premises.