Guest Stars Sean Chapman as Peter Tracey Colin Jeavons as George Tracey Mary Wimbush as Aunt Lavihia John Quarmby as Henry Tobias Neville Barber as Howard Baker Linda Polan as June Baker Ian Sears as Brendan Richards Gillian Martell as Lilly Gregson Bill Fraser as Commander Pollock Nigel Gregory as Sergeant Wilson Stephen Oxley as P.C. Carter