85.—(1) Where in the opinion of a local authority any function performable by it should be performed, generally or in a particular case, by another local authority, and that other authority is able and willing so to perform the function, then the authorities may enter into an agreement that—

(a) the function shall be so performed on behalf of the first-mentioned authority by the other authority, and

(b) it becomes so performable by that other authority in accordance with the agreement.

(2) Where in the opinion of a body which is a public authority any function performable by it should be performed, generally or in a particular case, by a local authority, and that local authority is able and willing so to perform the function, then the body and the local authority may enter into an agreement that—

(a) the function shall be so performed on behalf of the body by the local authority, and

(b) it becomes so performable by that local authority in accordance with the agreement.

(3) Where—

(a) consequent on an agreement under this section, a function becomes performable by a local authority, and

(b) the body, being a local authority or other body as referred to in subsection (2), as the case may be, which is the other party to the agreement would, if it performed the function, be authorised by law to do any act or thing in relation to such performance,

then the local authority is authorised to do that act or thing in relation to the performance by it of the function as if it were that body.

(4) An agreement under this section may contain terms and conditions as to—

(a) the performance of the function by the local authority, to such extent and for such period as may be specified in the agreement,

(b) the making of payments or the transfer of financial responsibility, and

(c) for such other matters as may be considered necessary to give effect to the agreement,

and may provide for an area of charge other than the area of charge specified in section 10 of the Local Government Act, 1946.

F106[(4A) An agreement under this section made after the commencement of section 20 of the Local Government Act 2019 shall not contain any term, condition or provision that is inconsistent with an arrangement under that section.]

(5) The making of an agreement by a local authority under this section, in so far as it relates to it, is a reserved function.

(6) An agreement under this section may relate to all or part of the area of a local authority as may be specified in the agreement.

F107[(7) This section is without prejudice to section 8 of the Health Act 2004 or section 10 of the Child and Family Agency Act 2013 and an agreement shall not be entered into under this section in any case in which an agreement could be entered into under either of those sections.]