From Wikipedia, the free encyclopedia. Gordon Cameron Jackson, OBE (19 December 1923 – 15 January 1990) was a Scottish Emmy Award-winning actor best remembered for his roles as the butler Angus Hudson in Upstairs, Downstairs and George Cowley, the head of CI5, in The Professionals. Description above from the Wikipedia article Gordon Jackson (actor), licensed under CC-BY-SA, full list of contributors on Wikipedia.