"Gobber". Like Dennis in the first three series Gobber has learning difficulties but unlike Dennis he is aggressive and intimidating, used by Terry Stringer as his "enforcer". Des (Portrayed by Billy Hamon) Des is almost always seen with his guitar and often interrupts lessons by trying to break into song (often of a protest or blues style) but his attempts at music-making are tuneless, raucous and abysmal. He does seem to have rather more of a talent at football but even then his defiant nature brings him into difficulties. Celia (Portrayed by Drina Pavlovic) and Daisy (portrayed by Rosemary Faith) are two friends but it is a rather one-sided friendship with Daisy doting on Celia. Daisy lacks confidence, particularly in her appearance, and makes a connection with the similarly-unconfident Miss Petting. See also List of films based on British sitcoms Welcome Back, Kotter References External links 1960s British sitcoms 1960s British workplace comedy television series 1970s British sitcoms 1970s British workplace comedy television series 1968 British television series debuts 1972 British television series endings English-language television shows ITV sitcoms Television series about educators Television series by ITV Studios London Weekend Television shows British high school television series Television shows adapted into films