On 22 May 2017 , an Islamic terrorist carried out a suicide bombing following a concert by the American singer Ariana Grande at the Manchester Arena . The bomb killed 23 , including the attacker , and injured over 800 with many being children and teenagers . It was the deadliest terrorist attack and the first suicide bombing in Britain since the 7 July 2005 London bombings . The attack caused worldwide condemnation and the changing of the UK 's threat level to " critical " for the first time since 2007 . Many of the injured and dead were from the Greater Manchester area and neighbouring parts of Cheshire and Lancashire
7 July 2005 London bombings
7 July 2005 London bombings
History of Manchester