The Lea Valley lines are two commuter lines and two branches in northeastern Greater London.
They run along the valley of the River Lea.
They were part of the Great Eastern Railway and they are now part of the Anglia Route of Network Rail.
It is located on a branding called The Weaver line.
On 31 May 2015, services from London Liverpool Street to Chingford, Cheshunt and Enfield Town were already transferred to London Overground.
Services between London Liverpool Street and Stratford via Tottenham Hale to Hertford East and Bishops Stortford remain with Greater Anglia.