One of the most ambitious visual portraits of citizenship ever undertaken in one of the world’s largest cities was launched today on over 600 billboards across all of London’s 33 boroughs.

Each billboard features a class photograph of Year 3 pupils from a London primary school, taken as part of an ambitious new project created by London-born Turner Prize-winning artist and Oscar-winning filmmaker Steve McQueen in partnership with Tate Britain, Artangel and A New Direction.