Stansted Express is the brand name for train services operated by Greater Anglia (formerly National Express East Anglia) between London Liverpool Street and Stansted Airport.
Services run every 15 minutes - from Stansted to London from 06.00 to midnight on Mondays to Saturdays, and 07.00 to midnight on Sundays, and from London to Stansted from 05.25 to 22.55 on Mondays to Saturdays and 06.10 to 22.55 on Sundays. There are also some trains outside of these hours - find cheap train tickets for Stansted Express online with MyTrainTicket.
Refreshments are available on most trains and there is plenty of luggage space onboard. First Class accommodation is available.