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In the middle of the morning rush hour four bombs went off on three tube trains, at 8.50am and a bus, at 9.47am. 52 people died.
Plaques commemorating the victims have been placed at each of the bomb sites at five locations - King's Cross, Russell Square, Edgware Road, Aldgate and Tavistock Square. Survivors and the dead from the Piccadilly line bomb were brought out at King's Cross and also at Russell Square since the explosion occurred midway between the stations and so identical plaques are placed at each of these two sites.
The King's Cross plaque has actually been placed in the St Pancras western ticket hall, possibly because the King's Cross tube station already holds two memorials for the victims of the 1987 fire there.