Trains have been cancelled on the Metropolitan Line as a number of control room staff are self-isolating.

Transport for London (TFL) confirmed to the Observer that several members of the team have been ‘pinged’ by the NHS test and trace app, meaning they must isolate.

It has left shortage of staff in the control room and as a result, there will be no service on the Met Line for the rest of the day, a spokesperson said.

Those in Harrow are among commuters facing disruption if they had planned on using the line, although London Underground tickets will be accepted on Chiltern Railways and local bus services.

Harrow Times: Image: TFLImage: TFL

The lack of control room staff is also affecting other services on the Underground as well. On the District Line, there is no service High Street Kensington to Edgware Road, whilst on the Piccadilly Line there are no trains between South Harrow to Uxbridge.

These delays are set to last until 9pm, according to TFL.