Bombs on the British mainland

October-November 1974 - Wave of IRA bombs in British pubs kills 28 people and wounds more than 200.

July 1982 - Two IRA bomb attacks on soldiers in London's royal parks kill 11 people and wound 50.

December 1983 - IRA bomb at London's Harrods department store kills six.

October 1984 - Prime Minister Margaret Thatcher's cabinet narrowly escapes IRA bomb which kills five people at Brighton hotel during the Conservative Party's annual conference.

December 1988 - A Pan Am Boeing 747 crashes on the town of Lockerbie, Scotland, killing all 259 aboard after a bomb on board explodes. Eleven people in Lockerbie are also killed.

February 1991 - The IRA fires mortar bomb at Prime Minister John Major's London office. No one is injured.

April 1992 - Huge car bomb outside Baltic Exchange in London's financial district kills three people and wounds 91.

March 1993 - Bombs in two litter bins in Warrington kill two boys aged three and 12.

April 1993 - IRA truck bomb devastates Bishopsgate area of London's financial district, killing one and wounding 44.

February 1996 - Two people die when IRA guerrillas detonate large bomb in London's Docklands area.

July 7 2005 - Islamic suicide bombers kill 52 people on London's transport system.