Category: Heathrow Express
One of the many travel options to Heathrow. A non stop rail service from London Paddington which takes 15 minutes to Heathrow Terminals 1, 2, and 3 and 21 minutes to Heathrow Terminal 5. Passengers for Terminal 4 should change to the Heathrow Connect service at the Terminals 1, 2 and 3 station.
According to Wikipedia, passengers transferring between Terminals 1/2/3 and Terminal 5 can use the Heathrow Express service free of charge. Note that the Heathrow Express is not part of the National Rail network (although it does share track with some National Rail services), and hence Travelcards and Oyster PAYG are not valid on the service.
Stops (in order) that the service makes (view them on a map):