Heathrow Express is a non-franchised, non-subsidised private rail company which runs up to 150 services a day and operates the stations at Heathrow Airport.

Launched in 1998 the non-stop service carries an average of 17,000 passengers a day. It is the fastest rail link from London to Heathrow, with a journey time of just 15 minutes to Terminals 2 and 3 (a few minutes more for Terminals 4 and 5).