This year six pictures will be auctioned off for Hope and Homes for Children and the exhibition was guest curated by Magnum Photos' Peter Marlow.

BBC: 24 hours, 24 photographers, 24 years

Magnum Photos was brought to life in the aftermath of World War II by photographers Robert Capa, Henri Cartier-Bresson, George Rodger and David "Chim" Seymour, each of whom was well acquainted with covering a changing world, where borders and allegiances were shifting as players set themselves for what was to become the Cold War.

BBC: Revolution through the lenses of Magnum photographers