A new spur was built from the existing Great Western Main Line to the airport, running mostly in tunnel.

With the project delayed, a decision was made to open a temporary surface-level station at the edge of the airport whilst construction continued.

[4] Heathrow Junction station was situated in Stockley Park, slightly to the north of the airport.

Class 332 trains (branded as "Heathrow Fast Train") carried passengers from Paddington to Heathrow Junction (a journey of 12 minutes), and a fleet of shuttle buses carried the passengers the remaining distance to the airport.

Trains no longer called at Heathrow Junction, and within ten days the track leading to the station had been dismantled.