Safety on the London Underground The earliest attack on the London Underground was in 1885, when a bomb exploded on a Metropolitan line train at Euston Square station. The Provisional IRA (and its predecessors) carried out over ten separate attacks between 1939 and 1993. As a response to growing 'Mumbai-Style' terrorist attack threats, the British Transport Police has its own detachment of armed officers who will regularly patrol both the Underground’s stations and its trains. Various regulations aim to improve safety on the Tube. Smoking was allowed in certain carriages in trains until 9 July 1984. In the middle of 1987 smoking was banned for
Attacks on the London Underground in London. On 7 July 2005, bombs exploded on Underground trains between Aldgate and Liverpool Street stations, Russell Square and King's Cross St. Pancras stations and Edgware Road and Paddington stations. A double-decker bus at Tavistock Square was also destroyed. The bombs were detonated by four homegrown terrorist suicide bombers. The explosions killed 52 people and resulted in over 700 injuries. Four more attacks, unconnected with those on 7 July, were attempted on 21 July 2005 at Shepherd's Bush Market, Warren Street and Oval stations, as well as on a bus in Bethnal Green. In these incidents, each bomb detonator