Cast (in credits order)
| Gareth Pierce | ... | Self - Narrator (voice) | |
| Rest of cast listed alphabetically: | |||
| Colin Baker | ... | Self | |
| Tom Baker | ... | Self | |
| Noel Clarke | ... | Self | |
| Arthur Darvill | ... | Self | |
| Peter Davison | ... | Self | |
| Carole Ann Ford | ... | Self | |
| Neil Gaiman | ... | Self | |
 |
Julie Gardner | ... | Self |
| Steven Moffat | ... | Self | |
| William Russell | ... | Self | |
| Yee Jee Tso | ... | Self | |
| Matthew Waterhouse | ... | Self | |
| Marcus Wilson | ... | Self | |
| Tom Chadbon | ... | Duggan (archive footage) (uncredited) | |
| Jenna Coleman | ... | Clara Oswald (archive footage) (uncredited) | |
| Christopher Eccleston | ... | The Doctor (archive footage) (uncredited) | |
| William Hartnell | ... | The Doctor (archive footage) (uncredited) | |
| Jacqueline Hill | ... | Barbara Wright (archive footage) (uncredited) | |
| Billie Piper | ... | Rose Tyler (archive footage) (uncredited) | |
| Catherine Schell | ... | Countess Scarlioni (archive footage) (uncredited) | |
| Elisabeth Sladen | ... | Sarah Jane Smith (archive footage) (uncredited) | |
| Lalla Ward | ... | Romana (archive footage) (uncredited) | |
Additional Crew
| Rhiannon Tate | ... | researcher |
