| Andrew Robertson (I) | Jack |
| Charlotte Gainsbourg | Julie |
| Alice Coulthard | Sue |
| Ned Birkin | Tom |
| Sinéad Cusack | Mother |
| Hanns Zischler | Father |
| Jochen Horst | Derek, Julie's Friend |
| Gareth Brown | William |
| William Hootkins | Commander Hunt's Voice (english version) |
| Michael Mendl | Commander Hunt's Voice (german version) |
| Dick Hockhart | Van Driver |
| Mike Clark | Van Passenger |