About one million Londoners are expected to elect new councillors . Its largely ceremonial but it controls $ 23 billion budget . Conservative Party incumbent Mayor Boris Johnson , 47 , and his 66-year-old nemesis , Labour left-winger and former Mayor Ken Livingstone . Front - runners are incumbent Conservative Boris Johnson and Labour 's Kenneth Clarke . Transport is key issue , especially design of city 's famous red buses .
About one million Londoners are expected to elect new councillors . Its largely ceremonial but it controls $ 23 billion budget . Front - runners are incumbent Conservative Boris Johnson and Labour 's Kenneth Clarke . Transport is key issue , especially design of city 's famous red buses .