David Bowie's art on show ahead of Sotheby's auction

Hundreds of works of art from David Bowie's personal collection are going on display at Sotheby's in London, ahead of an auction in a few weeks' time.

Bowie was actively involved in art throughout his career - as an artist himself, as a writer, and as a patron and collector.

The exhibition includes work from some of the 20th century's most influential artists, as Will Gompertz reports.