Brook 's Club bomb attack occurred on 22 October 1974 on St James 's Street in London . The Provisional Irish Republican Army 's Active Service Unit nicknamed the " Balcombe Street Gang " threw a 5 lb ( 2.27 kg ) bomb into an empty dining room causing extensive damage and injuring three members of staff of the Brook 's gentlemans club . The attacks occurred just two weeks after the ASU began its bombing campaign with the Guildford pub bombings which killed 5 , 1 civilian and 4 soldiers and injured over 60 others
Guildford pub bombings
Guildford pub bombings
Brook's Club bombing