A life in pictures: Richard Attenborough's art goes to auction

The auction catalogue, which lists the unique cross-section of 20th-century British art that the Attenboroughs assembled over the last 60 years Photograph: Peter Macdiarmid/Getty Images

A member of Sotheby's staff hangs LS Lowry's Old Houses in place Photograph: Tim Ireland/PA

Flowers On a Chair with Pipe and Paper by Christopher Wood Photograph: Tim Ireland/PA

Christopher Wood's The Card Players Photograph: Tim Ireland/PA

The Nerves of an Army by Christopher Nevinson gets a last-minute adjustment Photograph: Peter Macdiarmid/Getty Images

Edward Burra's Harbour With Boats, Plymouth Photograph: Tim Ireland/PA

Adjusting the mounting of Returning to the Trenches by CRW Nevinson Photograph: Tim Ireland/PA

While A Dawn 1914, by the same artist Photograph: Tim Ireland/PA

A technician in front of Nevinson's Building Aircraft: Acetylene Welder Photograph: Tim Ireland/PA