The Criminal Procedure Rules 2010

Making an arrest under a warrant

18.11.—(1) The person executing a warrant of arrest, commitment or detention must, when arresting the relevant person—

(a) either—

(i) show the warrant (if he has it with him) to the relevant person, or

(ii) tell the relevant person where the warrant is and what arrangements can be made to let that person inspect it;

(b) explain, in ordinary language, the charge and the reason for the arrest; and

(c) (unless he is a constable in uniform) show documentary proof of his identity.

(2) If the person executing the warrant is one of the persons referred to in rule 18.10(b)(ii) (civilian enforcement officers or approved enforcement agencies), he must also show the relevant person a written statement under section 125A(4) or section 125B(4) of the Magistrates’ Courts Act 1980, as appropriate.