London Assembly

April 30 2002: The GLA building Photograph: David Levene/freelance

May 3 2002: Construction work nears completion on the spiral staircase of the GLA headquarters Photograph: Toby Melville/PA

September 3 2002: A view of Tower Bridge from the GLA building Photograph: Martin Godwin/freelance

February 2 2007: The London Assembly building at sunset Photograph: Daniel Berehulak/Getty

May 31 2007: Mayor Ken Livingstone in his office next to a map of London with mascots from the Beijing Olympics Photograph: Martin Argles/Guardian

January 22 2008: Ken Livingstone speaks to the press following the screening of Channel 4's 'Dispatches' Photograph: Cate Gillon/Getty

November 23 2007: Sian Berry launches her campaign with a pledge to put cutting the cost of living at the heart of her policies as Mayor Photograph: Nils Jorgensen/ Rex Features

January 23 2008: Brian Paddick, candidate for London Mayor, joins police officers on a march through central London in a protest over pay Photograph: Graham Turner/Guardian

September 3 2007: Boris Johnson addresses campaign supporters Photograph: Peter Macdiarmid/Getty