This is a list of incidents in London that have been labelled as "terrorism". It includes various bomb attacks and other politically driven violent incidents.
On 16 January 1939, the Irish Republican Army (IRA) launched a campaign of bombing and sabotage against the civil, economic, and military infrastructure of the United Kingdom. The campaign petered-out in early 1940.
In many cases telephoned warnings were given about bombs due to explode, identified as genuine by the use of a code word. In some cases the warning gave the wrong location, or did not give enough time to evacuate the area. Hoax calls, intended to cause disruption, were often made.
After the Belfast Agreement came into effect in December 1999, factions of the IRA, including the Real IRA continued to carry out terrorist activities.
In November 2001, three men – Noel Maguire, Robert Hulme, and his brother Aiden Hulme – were arrested in connection with the attacks at BBC Television Centre, Ealing Broadway and a third failed attempt in Birmingham on 3 November 2001. They were convicted at the Old Bailey on 8 April 2003, together with two other men – James McCormack and John Hannan, who had already admitted the charge at an earlier hearing. The Hulme brothers were both jailed for 20 years; Maguire, who the judge said played "a major part in the bombing conspiracy", was sentenced to 22 years; McCormack, who the judge said had played the most serious part of the five, also received 22 years; and Hannan, who was 17 at the time of the incidents, was given 16 years' detention.
The First of May Group was a Spanish and English based anarchist resistance movement, formed in 1966, opposed to Franco's government in Spain.
From May 1970 until August 1971, The Angry Brigade, a left-wing anarchist group, bombed some 25 commercial, political and government targets, mostly in and around London.