David Higgins, chief executive officer of the ODA said:
'The ODA will work with and through our transport delivery partners to deliver the best possible transport system for the games, one that leaves a lasting legacy for London and the country'.
Mr Sumner led on transport for London's bid from its genesis in 2003, his team at Transport for London developing the transport plans submitted to the IOC as part of London's successful bid. He has been acting director since July 2005 before which he was managing director of one of the infrastructure companies (Infracos) upgrading the Tube and director of passenger services at London Underground.
The Olympic Delivery Authority is a statutory corporation set up under the London Olympic Games and Paralympic Games Act 2006.