George Osborne, U.K. chancellor of the exchequer, holds the dispatch box containing the 2015 budget as he stands outside 11 Downing Street in London, U.K., on Wednesday, March 18, 2015. U.K. unemployment fell to its lowest level in more than six years and real pay growth accelerated in a boost for Osborne as he prepares to announce his final budget before the election. Photographer: Chris Ratcliffe/Bloomberg via Getty Images

George Osborne, U.K. chancellor of the exchequer, holds the dispatch box containing the 2015 budget as he stands outside 11 Downing Street in London, U.K., on Wednesday, March 18, 2015. U.K. unemployment fell to its lowest level in more than six years and real pay growth accelerated in a boost for Osborne as he prepares to announce his final budget before the election. Photographer: Chris Ratcliffe/Bloomberg via Getty Images