The Mayor of London has urged the government to let Transport for London take control of the failing Govia Thameslink Railway Southern franchise .

Sadiq Khan said thousands of passengers are “understandably furious” after weeks of cancelled services and delays.

Hundreds of Canary Wharf workers use Southern trains to travel from Brighton and Southampton to London Bridge but are struggling to make the journey after facing disruption, crammed carriages and replacement buses.

Southern has cancelled 350 trains a day in the wake of staff shortages, illness and industrial action.

Sadiq believes TfL is best placed to sort out the problems he described as “an embarrassment to our city.”

In a letter to the new transport secretary Chris Grayling he said: “Thousands of Londoners and longer-distance commuters simply cannot get to and from work, and are understandably furious.

“There is no doubt that the franchise must now be in default, and I have previously called for your department to step in and take control.

“Notwithstanding the wider discussions on devolution, I now offer to go one step further and put my senior TfL team in charge of the GTR Southern franchise until we get a permanent resolution."

He has also urged the Department for Transport to work with his team on putting in place a speedier timetable for the transfer of suburban rail services to TfL in order to improve efficiency.

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