Ashwinkumar Tanna, who had been a candidate for UKIP in the Tottenham by-election, 2000, ran on an independent ticket with a range of policies including opposing privatisation of London Underground, local involvement in policing and the establishment of a city-wide business forum.
Ken Livingstone had sought the Labour Party nomination but was defeated by Frank Dobson. He described the result as "tainted" because the election system gave greater weight to the votes of London Labour MPs, MEPs, & GLA candidates, rather than rank-and-file party members, and decided to contest the election as an Independent candidate. On handing in nomination papers he was automatically expelled from the Labour Party.
Steve Norris had lost the original selection ballot for Conservative candidate to Jeffrey Archer, but Archer stood down as a candidate when a newspaper printed a story accusing him of committing perjury during a 1987 libel trial (he was later convicted and imprisoned).