How to Be Cool: Cast Rate: –☹️ Very Bad🙁 Bad😐 Average🙂 Good😃 Excellent🤩 Super! ★ Save Rating✔ Rating Saved! Notify me: –about new episodeabout new seasonabout end of season Subscribe✔ Subscription Saved! How to Be Cool 12/3/88 – 12/17/88 ITV1 United Kingdom GeneralEpisodesTranslationsCastCharactersGallery Cast See full cast → Roger Daltrey as Cashman Tricia Penrose as Julie Alan David as Mr. Staines David Keyes as Henry Wellington Helen Martin as Detrendifer Peter Richey as Detrendifer Julie Foy as Deidre Robert McKewley as Jacob Mack Padraig McGuire as Gobbo Barbara Sinclair as Amy Jason Nardone as PK Sonya May as Louise Russell Lee as Nings