Months of Piccadilly Line Closures To Prepare for New Fleet

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Regular weekend engineering work taking place until October

The new walk through carriages will be air-conditioned. Picture: TfL

April 15, 2025

Transport for London (TfL) has announced a new timetable for engineering works on the Piccadilly line which will result in regular disruption through to October.

Nearly half of the weekends until the autumn, beginning with the Easter Bank Holiday weekend, will see part of the line being shut. From Good Friday to Easter Monday there will be no service from Acton Town to Uxbridge.

TfL says that the closures are a necessary part of its a £2.9bn investment programme to help the line run the new fleet of trains which are being introduced this year 2025.

The first new train arrived in London in October 2024 and it will now go through a programme of intensive testing, before starting to enter passenger service by the end of 2025.

The new stock features air-conditioning for the first time on a deep Tube train, wider all-double doorways for boarding and getting off, enhanced digital display screens for customer information, improved step-free access from/onto the platform and on-train CCTV cameras for additional security.

Once the 94 new trains have replaced the 86 existing trains. which date back to 1975, the number of trains through central London could increase from 24 to 27 trains an hour - every 135 seconds - at the busiest times increasing number of passengers that can be carried on the entire Piccadilly line by up to 23% during peak times.

Other changes include adjustment to platform edges and track position and an upgrade to the power system along the line. There will also be modifications to signalling to accommodate the new, longer trains.

Dates of planned weekend Piccadilly line closures

Weekend	Piccadilly line closure
Fri 18 - Mon 21 April	Acton Town to Uxbridge
Fri 2 (Night Tube) - Sat 3 May	Hyde Park Corner to Acton Town (until 07:00 Sat 3 May)
Fri 16 May (Night Tube)	King's Cross St Pancras to Cockfosters and Osterley to Heathrow
Sat 17 - Sun 18 May	King's Cross St Pancras to Osterley and Uxbridge
Sat 24 - Mon 26 May	Hammersmith to Cockfosters
Fri 20 June (Night Tube)	Hammersmith to Osterley
Sat 21 - Sun 22 June	Hammersmith to Cockfosters
Fri 27 June (Night Tube)	No service on entire Piccadilly line
Sat 28 - Sun 29 June	King's Cross St Pancras to Heathrow and Uxbridge
Sat 5 - Sun 6 July	South Harrow to Uxbridge
Fri 18 July (Night Tube)	King's Cross St Pancras to Cockfosters and Osterley to Heathrow
Sat 19 - Sun 20 July	King's Cross St Pancras to Osterley and Uxbridge
Fri 1 August (Night Tube)	King's Cross St Pancras to Heathrow
Sat 2 - Sun 3 August	King's Cross St Pancras to Osterley and Uxbridge
Fri 15 August (Night Tube)	Cockfosters to Osterley
Sat 16 - Sun 17 August	Hammersmith to Cockfosters
Fri 12 September (Night Tube)	Hammersmith to Heathrow
Sat 13 to Sun 14 September	Hammersmith to Osterley and Uxbridge
Sat 20 - Sun 21 September	Acton Town to Uxbridge
Fri 26 September (Night Tube)	King's Cross St Pancras to Cockfosters and Osterley to Heathrow
Sat 27 - Sun 28 September	King's Cross St Pancras to Osterley and Uxbridge
Fri 3 (Night Tube) - Sat 4 October	Hyde Park Corner to Acton Town (until 07:00 Sat 4 October)
Fri 10 (Night Tube) - Sun 12 October	Cockfosters to Hammersmith

At the Northfields depot new facilities are being built to maintain the trains with extra stabling track and cleaning facilities.

Fully upgrading the line-wide signalling to enable automatic train operation with additional trains would allow for a peak service of up to 36 trains an hour in the central area during peak hours, for a 64% increase in capacity compared to current levels and allow a permanent services at Turnham Green station. However, funding is not in place for this project.

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