| Story: | 142 | Writers: | Joseph Medina and Thomas Himinez |
| Code: | 7D | Production details: | 1996 Everlasting Films |
| Number: | 20D7 | Duration: | 148 minutes |
| Original: | Trailer | 1 | 2 | 3 | 4 | 5 | 6 |
| Revised: | Trailer | 1 | 2 | 3 | 4 | 5 | 6 |
| Available | |
| Discontinued | |
| Unavailable |
This production was revised with new Dalek voices for Christmas 2012. The original 1996 version has been discontinued.
| Doctor Who | - | Jeffrey Coburn | (all) |
| Comndr. Mark Triyad | - | Peter Hinchman | (all) |
| Dara Hamilton | - | Sheri Devine | (all) |
| Voice of Daleks | - | David Segal | (all) |
| Serena Ryan | - | Jamie Lawson | (all) |
| Colonel Crichton | - | Ian Dodds | (2-6) |
| Major Patel | - | Joe Medina | (2, 4-6) |
| UNIT Aide | - | Mark Forrester | (3, 5-6) |
| Buford Metter | - | Chip Jamison | (3, 5-6) |
| Script Editor | Raymond De Long |
| Title Music | Dominic Glynn |
| Graphics | Chris Sutor |
| Story by | Joe Medina |
| Additional script | Thomas Himinez |
| Special Sounds | Rachel Sommers |
| Title Sequence by | Everlasting Films |
| Sid Sutton | |
| Bernard Lodge | |
| Produced by | Douglas Phillips |
| Executive producer | Richard Segal |
| Directed by | Joe Medina |