The Chancellor, George Osborne, visiting a JCB factory
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UK economic recovery 'may be unsustainable'

6 December 2013 Last updated at 23:37 GMT

Claims made by the Chancellor, George Osborne, that the UK economy is showing signs of strong growth, have come under scrutiny from economists.

The Institute for Fiscal Studies has suggested that deeper public spending cuts will have to be made and said it is unclear where the money for some of the plans will come from.

Hugh Pym reports.