1(1)In section 91 of this Act (" the principal section ") " relevant assistance" means assistance under any such enactment as is mentioned in sub-paragraph (2) below and consisting of a payment to or for the benefit of a local authority or—
(a)the carrying out for a local authority of any works ;
(b)the supply to a local authority of any goods ;
(c)the provision for a local authority of administrative, professional or technical services; or
(d)the hiring to a local authority, or gratuitously making available to a local authority the use of, any vehicle, plant or apparatus of the Greater London Council or the metropolitan county council, as the case may be.
(2)The enactments referred to in sub-paragraph (1) above are—
(a)sections 101, 113(1) and 136 of the principal Act;
(b)section 5(1) and (3) of the [1963 c. 33.] London Government Act 1963 ;
(c)sections 7(1) and (6), 8, 273, 274 and 275 of the [1980 c. 66.] Highways Act 1980; and
(d)any other enactment (including a provision in a local Act or any instrument made under an Act) by virtue of which the Greater London Council or a metropolitan county council may agree or be required to discharge any functions of another local authority.