The main actors were Gillian Blake as Dora, Steve Hodson as Steve, Christian Rodska as Ron Stryker, Desmond Llewelyn as the Colonel and Arthur English as Slugger. Several other famous people had minor roles, one being Pam St Clement, the others being Gretchen Franklin as the Colonel's housekeeper and Kathy Staff in two separate bit parts. But what really characterised the series was its rotation of directors, many of whom have since become revered figures in the UK film industry, including Stephen Frears, Michael Apted and even Jack Cardiff who took time out from working overseas with Kirk Douglas to direct two episodes of the series. Also, in the third series, most notably, David Hemmings took the time to appear in one episode, "Uncle Joe" and also to direct two other episodes which took place before and after that episode: "The Bridge Builder" and the final episode, "Walk In the Wood".