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 Transport for London carries out planned upgrades.
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.
A reduced service is expected to continue to ...


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