Plot: Tonight's contenders are: John Flashman (civil servant) Life and works of John Constable; Gavin Hyde (lock keeper) Life and works of Henry Williamson; Paul Webbewood (civil servant) History of the British Labour Party from 1900; John Lloyd (conference interpreter) Russian History, 1861-1917. With Magnus Magnusson , from the Institution of Electrical Engineers, Savoy Hill , London