The 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 £1.84 billion in 2018), making it the costliest terrorist attack at the time (since surpassed by the September 11 attacks).
As a result of the bombing, which happened just over a year after the bombing of the nearby Baltic Exchange, a “ring of steel” was implemented to protect the City, and many firms introduced disaster recovery plans in case of further attacks or similar disasters. £350 million was spent on repairing damage. In 1994 detectives believed they knew the identities of the IRA bombers, but lacked sufficient evidence to arrest them.