Since 1970, it is thought that there have been at least 3,395 terrorist-caused deaths in the UK, the highest number of deaths in Western Europe.[2] Most of the deaths took place in Northern Ireland.[2] In Great Britain, there were about 430 terrorist caused deaths from 1971 until 2001.[3][4] Since 2001, there have been almost 100 terrorist-related deaths in Great Britain, most of which were caused by the 7 July 2005 London bombings in 2005 and the Manchester Arena bombing in 2017.