imagine... follows celebrated British TV writer Russell T Davies as he prepares to return as the showrunner of Doctor Who – with two Doctors and bigger ambitions.
| Actor | Role |
|---|---|
 Russell T DaviesSelf | Self |
 Ncuti GatwaSelf | Self |
 David TennantSelf | Self |
 Helena Bonham CarterSelf | Self |
 Olly AlexanderSelf | Self |
 Sally WainwrightSelf | Self |
 Caitlin MoranSelf | Self |
 Alan YentobSelf | Self |
 Cyril NriSelf | Self |
 Jill NalderSelf | Self |
 Catherine TateSelf | Self |
 Jane TranterSelf | Self |
 Julie GardnerSelf | Self |
 Phil CollinsonSelf | Self |
 Nicola ShindlerSelf | Self |