The Fen Line is a railway line in the east of England that links in the south to in the north. The line runs through Cambridgeshire and Norfolk and the name of the line refers to the Fens which border Cambridgeshire, Norfolk and Lincolnshire. It is in length and has eight stations. The line is part of the Network Rail Strategic Route 5 and comprises SRS 05.06 and part of 05.05. It is classified as a secondary line except between Cambridge and where it is classified as a London and South East commuter line. History The line was completed in sections in the 1840s, and previously extended north to the seaside town of Hunstanton. Services Great Northern Great Northern operate through services to (via the Cambridge line). These services operate non-stop between London and for most of the day, as part of the half-hourly "Cambridge Express" service. One train an hour is extended beyond Cambridge to serve all stations to , whilst the alternative services run to . These services are mostly operated by Class 387 electric multiple units. Before May 2017, Class 365s were the principal units. Three Class 365 EMUs received names associated with the line: The Fenman (365518) – previously a "named train" that used to operate on this line, consisting of locomotive-hauled InterCity (British Rail) trains; Robert Stripe Passengers' Champion (365527) was named on 10 March 2006, after the 21st Anniversary of the Fen Line Users Association; Nelson's County (365531) had a special livery applied to the outside which shows various scenes of West Norfolk however this was removed when Great Northern took over First Capital Connect. Greater Anglia Greater Anglia regularly runs services between and on an hourly basis via the Breckland line, running non-stop between and . Class 755 units are used for this service. In addition to this, Greater Anglia operate a few direct services between and King's Lynn or Ely (via the West Anglia Main Line). These services operate only run during the morning and evening peaks, and use Class 720 units. CrossCountry The section between Cambridge and is also used non-stop by CrossCountry services from (and onward to via and ). Class 170 units are used for this service. Signalling The line is double tracked except between Littleport and Downham Market and between Watlington and King's Lynn where it is bi-directionally signalled single track. In the Down direction, the entrance to