1962: A look back at The Great Smog of London 1952
Tonight revisits the scenes of chaos caused by the "dark-yellow choking mass".
Thick smog descended on London in December 1952, bringing the city to a standstill and contributing to the deaths of about 4,000 people.
The Great Smog of London shrouded the city for four days.
Its legacy was the Clean Air Act of 1956, which introduced a number of measures to reduce pollution.
From the ΒιΆΉΤΌΕΔ Archives.