The London—Warwick—Birmingham Trunk Road (Detrunking through Tring) Order 1977
The Secretary of State for Transport makes this Order in exercise of powers conferred by section 7 of the Highways Act 1959(a), section 27 of the Local Government Act 1966(b) and now vested in him (c), and of all other enabling powers:-

(a) 1959 c. 25.    (b) 1966 c. 42.    (c) S.I. 1970/1681 (1970 III, p. 5551).    [DET 28358]