Londoners are being urged to check before they travel this weekend as an entire Tube line is set to be shut for engineering works.
The Piccadilly line faces major disruption on both Saturday and Sunday, with certain sections of the route completely closed as planned upgrades are carried out by Transport for London.
The biggest change will see no Piccadilly line trains running between Cockfosters and Heathrow from around 4am until the end of the service on August 1 and August 2, with a reduced service continuing to operate between Acton Town and Uxbridge.
In addition, there will be a complete closure of the entire Piccadilly line overnight between 12.30am and 4.30am on the weekend.
Passengers are also being reminded that westbound Piccadilly line trains are not stopping at Barons Court while upgrade works continue, and Finsbury Park station will remain closed throughout the weekend.
Anyone travelling across the capital is being urged to allow extra time for their journeys as major disruptions are expected.
This comes after a rare weekend without any major planned disruption across the TfL network.
Passengers are advised to check before they travel this weekend to plan their journeys accordingly.
