Hardly anything seen on a foggy day in London.
Various very darks shots of the people walking along London street in fog. Some of the buildings are illuminated. Various shots of the streets with cars and busses moving along with no lights on at extremely poor visibility. People walking around. Trafalgar Square, Nelson's column, lions, man feeding pigeons, Eros at Piccadilly etc. Some quite uncanny shots of mass of pigeons flying through foggy dark sky.