The race for London Mayor isn't over

Tony Travers, a local government expert from the London School if Economics, says it's looking even closer for the mayoral election.

In the previous run-offs, second preference votes haven't altered the outcome. Mr Travers thinks this time round they could.

If Siobhan Benita has taken votes from Ken Livingstone, Ken could win her second votes.

The race isn't over yet.

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Boris Johnson sworn in

The newly re-elected London Mayor Boris Johnson thanked the people of London for giving him a "second mandate" as he was sworn in at City Hall after defeating Ken Livingstone.