Staff members of the London Underground (LU) could hold strikes in response to Transport for London's (TfL's) plans for 24 hour services on the weekend.

General secretary for the National Union of Rail, Maritime and Transport Workers (RMT) Bob Crow told LBC Radio staff could strike for a week.

He said: "I don't believe that a one-day strike will get this madman at Central Office - [Boris] Johnson - to change his mind. I think we need a significant few days of action."

RMT's views are also being supported by the Transport Salaried Staffs' Association (TSSA), which argues additional plans to shut down ticket offices will make 60 per cent of station supervisors and 45 per cent of managers redundant.

In response to RMT's strike ballot, LU's chief operating officer Phil Hufton stated the 24 hour Tube service, to operate on five lines in 2015, will feature those facilities staffed at all times and more positions will be available in the future.

Current plans are aiming to provide 24 hour services on Saturdays and Fridays, while the removal of ticketing offices, with a focus instead on automated machines, has provided the unions with an additional cause for concern.