HC Deb 10 December 1985 vol 88 c584W
Mr. Conway

asked the Secretary of State for Transport if he is satisfied with the signposting for motorists travelling from Heathrow airport who wish to join the M4, M25 and M1 without entering London via the north circular road.

Mrs. Chalker

The M25-M4 interchange will be fully opened to traffic shortly and arrangements are already in hand to signpost the route from Heathrow to M1 via the M25 thereafter.