HC Deb 27 June 1973 vol 858 c339W
Mr. Michael McNair-Wilson

asked the Secretary of State for the Environment how soon he expects the M4 road link to London-Heathrow Airport to be saturated by traffic; and what discussions he is having about alternative access routes to meet the passenger demand of the 1980s.

Mr. Peyton

The M4 is already congested at some points between central London and Heathrow during peak hours. A new rail link on the Piccadilly Tube line to Heathrow is under construction and is expected to reach completion in 1976.