24.—(1) A person executing a warrant of arrest shall, upon arresting the relevant person—
(a)if they have the warrant with them, show it to the relevant person; or
(b)otherwise state where the warrant is and what arrangements may be made to allow the relevant person to inspect it;
(c)explain in ordinary language the reason for the arrest; and
(d)unless he is a constable in uniform, produce documentary proof of his identity.