Lord Harris of High Cross said that the many studies done worldwide have produced no reliable link between lifetime exposure to environmental tobacco smoke and lung cancer in non-smokers. He says the 'evidence' on passive smoking is based on nothing more substantial than "estimates, guesswork, subjective recollections and even gossip.

Obituary of Lord Harris of High Cross: "...the high priest of the libertarian right, whose creed included full-blooded monetarism, the unleashing of market forces, sharp tax cuts, unrestricted Sunday trading, the castration of trade unions and the abolition of minimum wages, nationalised industries and inflation-proof pensions. In 1979 Margaret Thatcher made him her first peer."

Clearly someone whom we should all treat as a highly reliable sourece of guidance on these matters...