The International Monetary Fund has revised upwards its growth outlook for the U.K. by more than any other advanced economy. Britain is now forecasted to grow 1.4% this year, double the rate predicted in April, when the IMF chief economist Olivier Blanchard criticised George Osborne for his austerity measures. Nevertheless, speaking to the press at the IMF's annual meeting in Washington, Mr. Blanchard acknowledged that he was pleasantly surprised by the U.K.'s performance.