Ken Livingstone says this will be his last election
In his speech at City Hall, the Labour candidate says he will not run in another election.
He added: This defeat is the worst.
Boris Johnson: election "close to the wire"
In his first in-depth interview before being newly re-elected, London's Mayor says he's keen to continue his mandate.
Boris signs in as mayor
Boris Johnson has attended his 'signing in' ceremony at City Hall.
Ken Livingstone looks back the on the Mayoral campaign
Ken Livingstone comments on election coverage and what the future holds.