Bishopsgate bombing occurred on 24 April 1993 , when the Provisional Irish Republican Army ( IRA ) detonated a powerful truck bomb on Bishopsgate , a major thoroughfare in London 's financial district , the City of London . Telephoned warnings were sent about an hour beforehand , but a news photographer was killed in the blast and 44 people were injured , with fatalities minimised due to it occurring on a Saturday . The blast destroyed the nearby St Ethelburga 's church and wrecked Liverpool Street station and the NatWest Tower . The financial cost was severe , estimated at the time to be over £ 1 billion of damage ( about £ in ) , making it the costliest terrorist attack at the time ( since surpassed by the September 11 attacks )
September 11 attacks
September 11 attacks
1993 Bishopsgate bombing