The Great Smog of ’52 blanketed London and seemed to be quite normal at first. But over the next two days, a period of cold weather, anticyclone and windless conditions turned the fog yellow, and people began to die in their thousands.
By the end of the week, 4,000 Londoners lay dead or dying. Evidence suppressed for fifty years put the final death toll at 12,000 victims. This film reveals how air pollution was the real cause of one of the worst natural disasters of the 20th century.
The weather preceding and during the smog meant that Londoners were burning more coal than usual to keep warm. Post World War II domestic coal tended to be of a relatively low-grade, which increased the amount of sulfur dioxide in the smoke.