Government Backs TfL Ambition to Take Control of Moorgate Rail Services

Transport for London’s long-standing ambition to bring Great Northern services into the capital’s transport network has received a significant boost after the Transport Secretary signalled her support for the proposal.

Newly released correspondence shows Heidi Alexander has endorsed the principle of transferring Great Northern Inner services from Government-owned operator Govia Thameslink Railway (GTR) to Transport for London, paving the way for further work on a detailed business case.

TfL is seeking responsibility for services operating between Moorgate, Welwyn Garden City and Stevenage via the Hertford Loop, with a target date of December 2027 for the transfer.

The proposal would see 26 stations become part of the TfL network, potentially bringing them under the London Overground brand and integrating fares more closely with London's wider transport system.

In a letter sent to London Mayor Sir Sadiq Khan earlier this year, Alexander described the business case as demonstrating clear benefits for passengers and wider economic growth.

She highlighted the potential to support housing development, improve connectivity and build upon TfL’s record of operating suburban rail services across the capital.

The proposal forms part of a wider push by City Hall to expand devolved control over rail services serving London and surrounding commuter areas.

TfL argues that incorporating the routes into its network would allow services to be planned alongside other London transport modes, creating a more integrated passenger experience while simplifying fares through the capital's zonal ticketing system.

According to TfL, passenger demand has been constrained by service frequencies that remain below historic levels. The organisation believes introducing more regular "turn-up-and-go" services could unlock growth and support regeneration along the route.

Current services operate using Class 717 electric trains, introduced between 2018 and 2019, while the route became one of the UK's first to use in-cab European Train Control System (ETCS) signalling following the removal of traditional lineside signals between Finsbury Park and Moorgate.

Despite ministerial support, a number of operational challenges still need to be resolved before any transfer can proceed.

One of the most significant issues involves train crews, as many drivers currently work across multiple GTR routes rather than solely on Moorgate services. Any transfer would require complex discussions regarding staffing arrangements and potential employee transfers.

There are also wider strategic considerations surrounding the Hertford Loop, which plays an important role as a diversionary route for East Coast Main Line services during disruption. Industry sources suggest agreements will be needed to ensure the route continues to support the wider national rail network.

GTR has confirmed it is assisting TfL as further work is carried out on the proposal and said its immediate focus remains on delivering reliable services for customers.

TfL believes the move could mirror the success of previous rail devolutions, pointing to the growth in passenger numbers seen since the creation of London Overground.

If approved, the transfer would represent one of the most significant changes to rail operations in north London and Hertfordshire in recent years, extending TfL’s influence further beyond the capital while creating a more integrated transport network for commuters travelling into central London.