(1)The Secretary of State—
(a)may appoint officers to act for the purposes of this Act; and
(b)may, instead of or in addition to appointing any officers under this section, arrange with any Minister of the Crown or government department, or any body performing functions on behalf of the Crown, that officers of that Minister, department or body shall act for those purposes.
(2)When acting for the purposes of this Act, an officer shall, if so required, produce some duly authenticated document showing his authority so to act.
(3)If it appears to an officer that any person with whom he is dealing while acting for the purposes of this Act does not know that he is an officer so acting, the officer shall identify himself as such to that person.