• Sectors: Transportation, Rail and Urban Transport

Thameslink Programme

London, United Kingdom - The Thameslink Programme is transforming north-south travel through London by introducing new twelve and eight carriage Class 700 trains, providing 80% more peak seats across the central London route between St Pancras and Blackfriars. Arcadis was appointed to design the two train maintenance depots in Hornsey, North London and Three Bridges, West Sussex. These will play a significant part in housing and maintaining the new fleet for the Thameslink network.


increased peak seats


new jobs
Thameslink depot - Matt Buck

Photo credit to Matt Buck.

The Thameslink Programme has already provided longer, 12-car trains between Brighton and Bedford, lengthening platforms at several stations, track work, and upgrading stations including West Hampstead, Farringdon and Blackfriars. These changes will reduce overcrowding and increase capacity on some of the busiest routes in the UK.

The Three Bridges depot was split into east and west-side facilities either side of the London to Brighton mainline. Works here included a five-road, 12-car maintenance building with associated stores, workshops and offices, train stabling and servicing roads.

The depot at Hornsey was constructed within a live operational rail environment next to the East Coast mainline. The project involved the coordinated redevelopment of two separate areas of existing infrastructure, including the existing operational depot and derelict sidings. The work included building a new three-road, 12-car maintenance shed, two carriage washing machines, offices, CET Systems (controlled-emission toilets) and all associated depot infrastructure.

The depots are a result of extensive collaboration between Arcadis, VolkerFitzpatrick, Siemens, GTR and Network Rail and are essential to ensure the new fleet of high-tech trains come into service. The depots include state of the art facilities and have set the standard for the future. Acting as a centre for excellence, the depots provide training and apprenticeships in the maintenance and service of a range of trains.

Thousands of jobs are being created as a result of the Thameslink Programme, including up to 2,000 in support of the new trains, across the UK supply chain in component manufacturing assembly, construction of new depots and subsequent maintenance.

Arcadis delivered high quality designs tailored to the complex work package in a live rail environment, calling on its numerous in house experts and working seamlessly with the wider project team to deliver on time and within budget. The completion of the depots resulted in a major milestone for the Thameslink Programme, which will transform journeys for millions of passengers across all routes.

“It is fantastic to see such a significant milestone reached as part of the Thameslink Programme. I would like to congratulate all of our Partners who have created a world class train maintenance facility.”
Andy Pitt, Executive Chairman of train owners Cross London Trains (XLT)



increased peak seats


new jobs


of passenger’s journeys transformed

Questions about this project

Mac Alghita

Head of Infrastructure +44 (0)7909 537 870 Ask me a question
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