Planned part closures on the Piccadilly line as vital upgrade work and testing of the brand-new trains gathers pace:
Closures essential for continued testing of the new Piccadilly line trains on the Underground network before they start entering service between December 2026 and June 2027
New trains will replace the existing fleet, which has been serving London since 1975, bringing significant customer benefits including improved reliability, efficiency and comfort
Closures will allow for upgrades to the Piccadilly line’s complex infrastructure, ahead of the arrival of the new trains
Piccadilly line part closures are mostly at weekends but some will also include weekdays, predominantly during summer holidays
Piccadilly line customers are advised to plan ahead using TfL’s real-time travel information tools including TfL Journey Planner and TfL Go
Transport for London (TfL) is advising Piccadilly line customers to plan ahead during upcoming closures, as vital upgrade work continues ahead of a brand-new fleet of trains beginning to enter service between December 2026 and June 2027. The new trains will bring significant benefits to customers including walk-through carriages, increased reliability and frequency, improved accessibility and CCTV.
These part-closures will allow TfL to carry out essential upgrades to the power supply, tracks, platforms, depots and sidings while continuing to test the new trains’ interaction with existing London Underground infrastructure, alongside assessments of their efficiency and performance.
