3.—(1) Competent authorities may in writing appoint as authorised officers, either generally or specially, such persons (whether or not officers of those bodies) as they consider necessary to act in matters arising under the Official Control Regulations.
(2) Relevant enforcement authorities may in writing appoint as authorised officers, either generally or specially, such persons (whether or not officers of those bodies) as they consider necessary to act in matters arising under Part 2 of these Regulations.