 A month earlier, passengers' organisation London TravelWatch had claimed that the route carried more passengers than any other route in Europe, although this was disputed by some commentators.In 2009 it was announced by new Mayor of London Boris Johnson that articulated buses would be replaced by the end of 2011; it was initially expected that the 207 would be converted to rigid single-deck operation.In February 2011, Transport for London confirmed that the route would be converted to double-deck vehicles in December 2011, and that the frequency of the route would be increased.