A ban on smoking in all enclosed public places would save the UK economy £4bn each year, according to a report by the Royal College of Physicians. The money would come from increased productivity, lower NHS costs and reduced insurance, cleaning and fire-related bills. The Going Smoke-Free report also refutes the "myth" that banning smoking at work would increase smoking in the home, saying that, of the 12,000 deaths caused each year by passive smoking, 500 are due to smoking at work Professor John Britton, chairman of the college's Tobacco Advisory Group, said: "The big problem with passive smoking is the number of people affected by smoking at home. "How do we address that? The evidence shows that if you make public places smoke-free a lot of people who smoke quit and a lot of people who continue to smoke stop smoking at home. You become used to the idea that smoking is not normal and you don't do it in front of other people. To have loop-holes or exceptions is illogical and counter-productive."