The population of the UK’s honeybees continues to fall, with almost 20% of colonies dying last winter, according to figures from the British Beekeepers Association (BBKA). The figure is an improvement on the 30.5% for winter 2007-08 but is way short of the 7-10% which until the last five years had been considered acceptable. Average national losses of 19.2% were highest in the north of England at 32.1%, and lowest 12.8% in the east of England. Mass bee deaths termed colony collapse disorder are blamed on disease possibly compounded by pesticides, changes in agriculture, and climate. Bees are estimated to be worth around £200m to the UK economy thanks to the job they do pollinating crops.