Phil Marsh, a former senior executive for Network Rail, told the ITV Tonight programme that the Department for Transport "could be said to be robbing tax payers in the latest franchising fiasco".
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Transport Secretary Chris Grayling reportedly wants the publicly-owned firm to share responsibility for running tracks with private firms.
Attorney General Jeremy Wright QC said High Court ruling dismissed the public's referendum vote as 'merely' a political event.
Northern and eastern areas will see a touch of frost at first, but most places will see sunshine.