A report from a research firm says green corporate spending will soar by a recession-busting 16 per cent a year between now and 2015. Verdantix predicts spending on sustainability among the 420 UK firms with revenues of more than £750m will rise 12 per cent this year to £4.3bn. The figures will reach 15 per cent in 2013 and 17 per cent in 2014 and 2015, making a total market worth £6.8bn. The report says commercial benefits result from green investments.