TfL Rail

TfL Rail was the concession which operated commuter services on two separate railway lines in London, England and its environs whilst the Crossrail construction project linking these lines was underway. It ran from 2015 until May 2022, upon the opening of the Crossrail central section, when TfL Rail was rebranded as Elizabeth line and the name was discontinued.

TfL Rail was introduced on 31 May 2015 when it took control from Abellio Greater Anglia of the commuter "metro" service between London Liverpool Street in central London and Shenfield in Essex. The branch comprised the first 14 stations on the Great Eastern Main Line, with interchange at Shenfield for medium- and long-distance services beyond to East Anglia. TfL Rail had also taken over operation of some services from Paddington to Heathrow Airport and Reading. Services were operated by MTR Crossrail under contract to Transport for London (TfL). Between May 2016 and May 2017, TfL Rail carried over 47 million passengers on the Shenfield branch.