| BESSMERTNY | Russ Gregory |
| ANNA PETROVNA | Gerry Willis |
| VERA | Sophie Worger |
| NADEZHDA | Francesca de Majo-Burrows |
| PROF LEV IV ANOVICH SERGEYEV | Will Harris |
| DIRECTOR OF THE NUCLEAR PLANT | Roly Adlam |
| THE DRIVER | Dick Bower |
| THE GENERAL | Rob Clark |
| PROF LYDIA STEPANOVNA PTITSYNA | Jean Telfer |
| THE INVESTIGATOR | Liz Meason |
| THE CYCLIST | Demetris Robinson |
| KLAVA | Lindsay Johnson |
| THE FIREMAN | Lewis Wilmott |
| GEIGER-COUNTER OPERATOR | John Cosier |
| CONTROL-ROOM OPERATIVE | Andy Deere |
| THE PHYSICIST | Norbert Johnson |
| PROF KYLE | Lewis Wilmott |
| RADIO VOICES | Anne Marie Carlile, Jeff Stone, Dave Korman |
| Stage Manager | Jeff Stone |
| Lighting | Andy Plumb |
| Sound | Dave Korman |
| Set construction | Jeff Stone, Andy Plumb, Dave Korman |
| Continuity | Anne Gregory |
| Costumes | The company and Wallington Operatic |
| Properties | The company |
| Front of House | Diana Calvert |
| Programme | Dick Bower |
| Publicity design | Ken Fitzell |
Sutton Amateur Dramatic Club is a registered charity, number 259484 and a Member of the Arts Council of The London Borough of Sutton