Set high on a ridge in historic parkland less than five miles from Trafalgar Square, Kenwood is London's favourite 'country house'. Remodelled by Robert Adam in the eighteenth century, in 1928 it became the home of the Iveagh Bequest, a superb collection of old master paintings that includes Rembrandt's most celebrated self-portrait, the only Vermeer in England outside the National Gallery and the Royal Collection, Gainsborough's Countess Howe,...