8A.—(1) A responsible authority may in writing appoint persons to be authorised officers for the purposes of all or any of the designated provisions.

(2) An appointment under this section may be for a specified or unspecified period.

(3) A responsible authority who appoints an authorised officer shall provide the officer with a certificate of authority.

(4) Whenever an authorised officer is requested to do so by a person in relation to whom the officer is exercising a power under the designated provisions, the officer shall produce the officer's certificate of authority together with some form of personal identification.

(5) The appointment of a person as an authorised officer ends—

(a) when the responsible authority concerned revokes the appointment or the person dies or resigns from the appointment, or

(b) if the appointment is for a fixed period, when the period ends, or

(c) if the person appointed is employed in the office of that responsible authority, when the person ceases to be so employed.]