Art critic and author John Berger has died at the age of 90. His best-known work was Ways of Seeing, a criticism of western cultural aesthetics, but he also won the Booker Prize for his novel G. Director of Ways of Seeing, Mike Dibb, and Tom Overton, who is currently writing a biography of John Berger and catalogued his archive for the British library, joined the programme to remember their friend. (Image: John Berger, credit: EPA)