Economic growth in the U.K. will beat its pre-recession peak in the second half of next year, according to a new report from the British Chambers of Commerce (BCC).

The business lobby group upgraded its short-term gross domestic product (GDP) growth forecasts for the country, from 1.3 to 1.4 percent for 2013 and from 2.2 to 2.7 percent for 2014.