TfL advances Bakerloo line upgrade with plans to expand train depots

Transport for London (TfL) has taken another step towards replacing the Bakerloo line's ageing trains by progressing plans to expand key depots ahead of the arrival of a new fleet in the early 2030s.

Subject to final approval, TfL is expected to order 36 new walk-through, air-conditioned trains, based on the same Siemens platform currently being introduced on the Piccadilly line. The replacement fleet will modernise what are currently the UK's oldest trains in regular passenger service.

To accommodate the new trains, TfL is planning major upgrades at Stonebridge Park Depot, alongside improvements at Queen's Park and London Road (Elephant & Castle). Although the overall fleet size will remain unchanged, the new trains require significantly different maintenance and operational facilities.

The transport authority is currently negotiating with Network Rail and The Arch Company to acquire land surrounding the depots. However, as a contingency, TfL's Board is being asked to approve the use of Compulsory Purchase Order (CPO) powers should agreements not be reached voluntarily.

At Queen's Park, proposals include new stabling sidings, improved reversing facilities and the realignment of Network Rail infrastructure. At Stonebridge Park, TfL intends to demolish and rebuild parts of the existing depot while constructing additional stabling roads on adjacent land.

The proposed land acquisition costs have already been included within the overall Bakerloo Line Upgrade Programme budget.

TfL's Board is scheduled to consider the CPO proposal at its meeting on 8 July, marking another milestone in a programme that aims to improve reliability and increase services on the Bakerloo line to 24 trains per hour through central London.