Duncan Preston (born 1946) is an English actor. He is known for his appearances in television productions written by Victoria Wood, including his roles of Clifford in the soap opera parody sketches Acorn Antiques, and Stan in the sitcom Dinnerladies (1998–2000). He reprised his role of Clifford in Acorn Antiques The Musical in 2005. His other television roles include Jonathan Haslam the sitcom Surgical Spirit (1989–95); playing Kevin's dad in Harry Enfield and Chums (1994), and Douglas Potts in the soap opera Emmerdale (2007–11, 2014–present).