Terrorism in the United Kingdom

Terrorism in the United Kingdom, according to the Home Office, is a big threat to the nation. There have been a few different causes of terrorism in the UK. in the 20th century, most attacks were caused by the Northern Ireland conflict (the Troubles). In the 21st century, most of the attacks were by Middle Eastern terrorist groups, most of which were linked with Islamism and/or the Arab–Israeli conflict.
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. Most of the deaths took place in Northern Ireland. In Great Britain, there were about 430 terrorist caused deaths from 1971 until 2001. 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.