Home People Derek Elphinstone Derek Elphinstone movies Derek Elphinstone movies Derek Elphinstone Movies (6) Witness for the Prosecution (1949) As Sir Wilfrid Robarts. The Red Shoes (1948) As Lord Oldham. In Which We Serve (1942) As No. 1. Sailors Three (1941) As British Observer. Convoy (1940) As Hawkins. The Four Feathers (1939) As Lieutenant Parker.