This is a list of massacres that have occurred in the purely geographical definition of the island of Great Britain and minor outlying islands and excludes Northern Ireland and massacres in Ireland before independence.
[1] Bede describes Cadwallon's actions during the occupation, stating "though he bore the name and professed himself a Christian, was so barbarous in his disposition and behaviour, that he neither spared the female sex, nor the innocent age of children, but with savage cruelty put them to tormenting deaths, ravaging all their country for a long time, and resolving to cut off all the race of the English within the borders of Britain".
[3] Cadwallon's occupation ended when he was killed at the Battle of Heavenfield.
Four coordinated terrorist Suicide bombings in central London between 08:50 and 09:47.
It was the United Kingdom's worst terrorist incident since the 1988 Lockerbie bombing.