From the Big Smoke to the Big Choke
‘A foggy day in London town,’ croons Fred Astaire in the 1937 musical comedy A Damsel in Distress, puffing nonchalantly on a cigar as he wanders through a wood that has already been half obliterated by belching Hollywood smoke machines. Today Gershwin’s lyrics conjure up a nostalgic vision of life in the city, involving pale fingers of fog wrapping themselves around lamp posts and the muffled clop of hooves on cobbles. Actually, for many years the reality of a London fog was far less appealing. It clogged your lungs and made your eyes smart; it turned the air into a murky kaleidoscope of colours (yellow, grey, blue) that appeared to
