Harold Charles Sydney Heylen (25 May 1922 – 4 December 1996),credited variously as Syd Heylen, Sid Heylen and Sydney Heylen, was an Australian character actor of radio, stage, television and film, comedian, and variety performer. Heylen was best known known for the television serial A Country Practice, as publican Vernon "Cookie" Locke, he often performed in a traditional vaudeville style in the vein of Roy Rene, and also sang and played banjo and ukulele.