Services on the Piccadilly Line to Heathrow Airport will be subject to cancellation from early Saturday morning, 10 February until the start of service on Thursday, 15 February.
From 00:45 to 05:00 Saturday morning, 10 February, there will be no Night Tube services between Hammersmith and Heathrow Airport. Between Acton Town and Heathrow Airport there will be no services from the start of Saturday morning services until the start of service on Thursday, 15 February.
The withdrawal of services is to allow points to be replaced at Northfields and work to be completed at Heathrow Airport stations.
During the closure, Elizabeth line services will continue to operate to Heathrow as normal, and rail-replacement bus services will also be provided.
The work at Northfields is to replace outdated track components, including points, to enable the introduction of new Piccadilly line trains next year.
These are part of a £2.9bn investment to modernise the line with 94 new trains being introduced from 2025 onwards to help run more reliable services safely, inclusively and sustainably.
The new trains have been designed with walk-through carriages, air-conditioning, and wider all-double doorways so that customers can get on and off more easily, and an increase of 10 per cent in passenger.
They feature enhanced digital customer information display screens, CCTV cameras for security, and, for the first time on a deep tube train, air conditioning, and will also improve energy efficiency and accessibility.
Work to replace points would normally take place overnight during engineering hours, but the ones at Northfields are located underneath a bridge, meaning they cannot be replaced quickly.
Richard Jones, Director of Asset Performance Delivery for TfL, said: “We thank customers in advance for their patience during this vital closure of the Piccadilly line. The track at Northfields has to be replaced and doing so will make journeys smoother and more reliable, as well as enable us to deliver as much of the improvements made by the upgrade to the Piccadilly line as possible.
“The Elizabeth line will help customers reach Heathrow Airport during this closure but we will also be operating rail replacement buses in Hounslow and the surrounding areas. Customers should check before they travel and leave more time for their journeys during this work.”
