Public transport users will face further disruption this weekend as major engineering works continue.
On Saturday July 26 and Sunday July 27 there will be no service on the Metropolitan Line between Wembley Park and Uxbridge and Northwood.
This is while Transport for London replaces track at Ickenham and replace points at Harrow-on-the-Hill.
On the same days there will also be no service on the Piccadilly Line between Rayners Lane and Uxbridge.
The works are part of a summer engineering project to replace old rails which will result in more than 20 days of line closures during the coming weeks.