It shall be the duty of the police authority for every police area for which a police force is required to be maintained by section 1 of this Act to secure the maintenance of an adequate and efficient police force for the area, and to exercise for that purpose the powers conferred on a police authority by this Act.

The police authority for every such police are a shall, subject to the approval of the Secretary of State and to regulations under Part II of this Act, appoint the chief constable of the police force maintained by that authority and determine the number of persons of each rank in that force which is to constitute the establishment of the force.

The police authority for any such police area may, subject to the consent of the Secretary of State, provide and maintain such buildings, structures and premises, and make such alterations in any buildings, structures or premises already provided, as may be required for police purposes of the area.

The police authority for any such police area may, subject to any regulations under Part II of this Act, provide and maintain such vehicles, apparatus, clothing and other equipment as may be required for police purposes of the area.

A combined police authority may, if so authorised by the amalgamation scheme, make arrangements with any constituent authority for the use by the combined police authority of the services of officers of the constituent authority and the making of contracts and payments on behalf of the combined police authority by the constituent authority.