London Underground workers are to stage two 48 - hour strikes over controversial plans to close ticket offices and scrap hundreds of jobs in the capital.Some 8,300 members of the Rail Maritime and Transport (RMT) union, including station staff and train operators, were balloted on Thursday. The RMT announced that some 77 percent of its members voted in favour of an industrial action on a turnout of 41 percent. The union members are expected to walk out for 48 hours from noon on both February 4 and February 1 in protest against major changes to the tube announced by London Mayor Boris Johnson and the Transport for London (TFL) in November last year. Under the new plans, aimed at saving about £50 million a year, more than 750 people will lose their jobs, all 260 tube ticket offices across the network will be closed, and a new 24-hour service will be running at weekends. "RMT members on London Underground have voted by a massive majority for both strike action and action short of a strike in a dispute which is wholly about cash-led cuts plans that would see the axing of nearly 1,000 safety-critical jobs and the closure of ticket offices,” said RMT General Secretary Bob Crow. According to reports, the action is likely to cause travel chaos for London commuters.