| Barry Evans | as | Michael Upton | |
| Robin Nedwell | as | Duncan Waring | |
| George Layton | as | Paul Collier | |
| Geoffrey Davies | as | Dick Stuart-Clark | |
| Ernest Clark | as | Professor Geoffrey Loftus | |
| Simon Cuff | as | Dave Briddock | |
| Jonathan Lynn | as | Danny Hooley (Series 2) | |
| Ralph Michael | as | The Dean (Series 1) | |
| Martin Shaw | as | Huw Evans (Series 1) |
Series: 2
Episodes: 26
Transmitted: 1969-1970
Channel: ITV
London Weekend Television