Constable, Gainsborough and Turner, the three towering figures of English landscape painting, have their artwork showcased in a new exhibition at the Royal Academy – Anne McElvoy is joined by art critic Lynn Nead and historian Andrew Wulf to review. Sir Ronald Harwood talks about adapting his play Quartet for the big screen. Advertising executives Robin Wight and Barry Delaney discuss the legacy of David Ogilvy. And the artist Katrina van Grouw gets under the skin of birds in a remarkable book of anatomical drawings.