TfL shortlists companies for Barking Riverside rail extension December 16, 2016 | Europe Company News Transport for London (TfL) has shortlisted Balfour Beatty, Carillion and Volker Fitzpatrick for constructing the 4.5-km extension of the London Overground Line, Gospel Oak-Barking, to the Barking Rive... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password