Strategic Route 5 - West Anglia was the designation given by Network Rail, from 2004 to 2009, to a grouping of railway lines in the East of England that encompassed the West Anglia Main Line and its various branch lines.
[1] In 2010, Network Rail restructured its route categorisation.
[1] The Greater Anglia RUS includes a number of proposals for the future development of the route.
In the medium term, 2009–14, this includes minor infrastructure works and additional rolling stock to allow main line peak-service trains to be extended to 12-car formation.
A number of developments are also intended for the West Coast Main Line depending on the status of future development at Stansted Airport.