An agreement for the establishment in relation to any body of constables maintained by an authority other than a police authority of procedures corresponding to any of those established by or by virtue of this Part of this Act may, with the approval of the Secretary of State, be made between the Authority and the authority maintaining the body of constables.

Where no such procedures are in force in relation to any body of constables, the Secretary of State may by order establish such procedures.

An agreement under this section may at any time be varied or terminated with the approval of the Secretary of State.

The power to make orders under this section shall be exercisable by statutory instrument; and any statutory instrument containing such an order shall be subject to annulment in pursuance of a resolution of either House of Parliament.

Nothing in any other enactment shall prevent an authority who maintain a body of constables from carrying into effect procedures established by virtue of this section.

No such procedures shall have effect in relation to anything done by a constable outside England and Wales.