The assembly comprises 25 members elected using the
Additional Member System of
proportional representation. 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 using a modified
 A party must win at least 5% of the party list vote in order to win any seats. Members of the assembly have the
post-nominal title 'AM'. The annual salary for a London Assembly member is approximately £55,000.
Since its creation in 2000, twelve assembly members have subsequently been elected to the
House of Commons:
Meg Hillier and
Diana Johnson for Labour;
James Cleverly and
Kit Malthouse for the Conservatives; and
Lynne Featherstone for the Liberal Democrats. One assembly member,
Jenny Jones, was appointed to the House of Lords as the first life peer for the Green Party, and sat in the assembly until May 2016.
Graham Tope and
Toby Harris were life peers elected to the assembly, while
Lynne Featherstone and
Dee Doocey were appointed peers after leaving the assembly. In addition,
Val Shawcross, Assembly Member for
Lambeth and Southwark was selected, but unsuccessful, as the Labour parliamentary candidate for the constituency of
Bermondsey and Old Southwark at the 2010 general election.
Graham Tope, and
Richard Tracey are all former MPs who were later elected to the assembly. One assembly member –
John Biggs, former AM for
City and East – became the directly-elected
Mayor of Tower Hamlets in 2015. He is currently serving as the Mayor.
Structure of the assembly
London Assembly elections have been held under the
Additional Member System, with a set number of constituencies elected on a first-past-the-post system and a set number London-wide on a closed party list system.
In December 2016, an Electoral Reform Bill was introduced which would have changed the election system to
 At the
2017 UK general election, the
Conservative Party manifesto proposed changes to how the assembly is elected, to first-past-the-post.
List of assembly members
Composition of London Assembly, 2000 – 2016