Guest Stars Jay Villiers as Dr. Anthony Watt Jason Barry as Rory O'Niel Stephen Churchett as Humphrey Poole Philip Philmar as Mr Andrews Glen Davies as Colin Sandy McDade as Christine Nigel Hastings as Henry Gibbs Kenneth Hadley as Doctor Tat Whalley as Kevin Barry McNicholl as Howie Paul Clarkson as Professor Barker Judy Browne as Nurse Sorcha Brooks as Jan