AN INVITATION for private firms to bid for the new London Overground contract will lead to yet more chaos on the capital’s rail networks, it has been warned.

In a statement yesterday, Transport for London (TfL) confirmed it had launched the tendering process to run overground services from November 2016, with bidders having until mid-May to register their interest.

The firm said that the new contract would see the introduction of new trains, more frequent services, a continuing programme of station upgrades, options to introduce an all-night service at weekends and to extend Gospel Oak to Barking line services to Barking Riverside in 2019.