The London Assembly is an elected body, part of the Greater London Authority, that scrutinises the activities of the Mayor of London and has the power, with a two-thirds majority, to amend the Mayor's annual budget. The Assembly was established in 2000 and is headquartered at City Hall on the south side of the River Thames close to Tower Bridge. The Assembly is also able to investigate other issues of importance to Londoners, publish its findings and recommendations, and make proposals to the Mayor.
The London Assembly comprises 25 members elected using the Additional Member System. Elections take place every four years - at the same time as for the Mayor. There are 14 constituencies each electing one member, with a further 11 members elected from a party list to make the total members from each party proportional to the votes cast for that party across the whole of London. Parties must win at least 5% of the party list vote in order to win any seats. Members of the Assembly have the letters 'AM' after their names.
¹Both United Kingdom Independence Party (UKIP) members defected in February 2005 to the newly-formed Veritas party; from September 2005 they formed their own party, One London which failed to win seats in the subsequent election.