Boris Johnson at launch of City Hall World AIDS Day exhibition
Boris Johnson addresses reporters at London Bridge Station re tube strike
Deputy Mayor of London Kit Malthouse speaking at launch of hydrogen buses for route RV1
Sir Nicholas Serota & Boris Johnson at Tate Modern extension groundbreaking ceremony
Mayor warns Chancellor to invest in London or risk starving UK's economic engine @MayorOfLondon
Boris Johnson launches youth busking competition at London Bridge Station
Mayor calls on London's schools to make one last push and 'Get Set for the Games' @MayorOfLondon
Boris Johnson opens climate change celeb photo exhibition at City Hall
Boris Johnson on arts funding during the recession
Part 1 of Ken Livingstone speech at Old Vic Tunnels
