Jeremy Paxman interviews Boris Johnson and Ken Livingstone in a debate about proposals for London's transport system. Paxman aggressively questions Boris about cost estimates for a proposed new fleet of Routemaster buses, but Boris avoids giving a direct figure, instead digressing and attempting to turn the conversation to his opponent's proposals. Frustrated by Boris' evasiveness, Paxman interrupts and presses for a clear cost, but Boris continues dodging the question and trying to control the agenda.