Here are obituaries for the British portraitist in: The Guardian, The New York Times, and The Telegraph.
The BBC couldn’t resist a little economics at the beginning of its obituary:
His works have been increasingly sought after at recent auctions and his portrayal of an overweight nude woman sleeping on a couch sold in 2008 for $33.6m (£20.6m) – a world record for a work by a living artist.