A reminder notice served on a person by an authorised person for an infringement notice offence against the Charitable Collections Act must identify the authorised person by—
(a) for an authorised person who is a police officer—the service number for the police officer; and
(b) for an authorised person to whom the Act, section 55 (Identity cards) applies—
(i) any unique number given to the person by the administering authority under regulation 6 (Administering authority) for these regulations; or
(ii) the authorised person's full name, or surname and initials.