From Wikipedia : Chelmsford railway station is on the Great Eastern Main Line in the East of England, serving the city of Chelmsford, Essex at Duke St, Chelmsford CM1 1HT. It is 29 miles 60 chains (47.9 km) down the line from London Liverpool Street and is situated between Ingatestone to the west and Hatfield Peverel to the east. Its three-letter station code is CHM.