In Pictures: The Great Smog of 1952
Forced change

The catastrophic smog was the first that brought firm parliamentary action, action that was centuries overdue. It led directly to the Clean Air Act of 1956 which regulated what could be burned in houses and created smoke free zones.

But as residents and industry needed time to convert, choking fogs continued into the 1960s - 750 Londoners died as a result of a toxic fog in 1962.

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