1(1)A search and seizure warrant may be executed by any police or customs officer.
(2)A search and seizure warrant may authorise persons to accompany any police or customs officer who is executing it.
(3)A person authorised under sub-paragraph (2) has the same powers as the police or customs officer whom he or she accompanies in respect of—
(a)the execution of the warrant;
(b)the seizure of anything to which the warrant relates.
But the person may exercise those powers only in the company, and under the supervision, of a police or customs officer.