The West Anglia Main Line is one of the two main lines that operate out of Liverpool Street. It runs generally north through Cheshunt, Broxbourne, Harlow, Bishop's Stortford and Audley End to Cambridge, with branches between serving Stratford, Hertford and Stansted Airport. The line runs along the boundary between Hertfordshire and Essex for much of its length.

Liverpool Street station, also known as London Liverpool Street, is a major central London railway terminus and connected London Underground station in the north-eastern corner of the City of London, in the ward of Bishopsgate Without. It is the terminus of the West Anglia Main Line to Cambridge, the Great Eastern Main Line to Norwich, commuter trains serving east London and destinations in the East of England, and the Stansted Express service to Stansted Airport.