The M4 London—South Wales Motorway (Heathrow Spur to M25 Interchange) Scheme 1984
The Secretary of State for Transport makes this scheme in exercise of powers conferred by sections 16, 17 and 19, of the Highways Act 1980 (a) and now vested in him (b), and of all other enabling powers:—

(a) 1980 c. 66.  (b) S.I. 1981/238.  [DET 2609]