Richard O'Sullivan Robin Tripp Actor Paula Wilcox Chrissy Plummer Actor Sally Thomsett Jo Actor Yootha Joyce Mildred Roper Actor Brian Murphy George Roper Actor Doug Fisher Larry Simmonds Actor Charles Morgan Teacher Actor Kenneth Watson Police Sergeant Actor Mike Savage Dustman Actor John Lyons Dustman Actor Peter Frazer-Jones Director, Producer Johnnie Mortimer Writer Brian Cooke Writer