Rebecca Front will appear in the next series of Doctor Who reuniting her with her former Thick of It co-star Peter Capaldi.
Front will guest star in an episode featuring the return of the Zygons, although her role in the show is being kept a closely guarded secret.
It will be a double reunion on the show, Front having previously starred alongside Jenna Coleman, who plays the Doctor’s companion Clara, in BBC1 drama Death Comes to Pemberley.
The two-part adventure, written by Peter Harness, will also feature Jemma Redgrave and Ingrid Oliver alongside Capaldi and Coleman.
A big Doctor Who fan, Front has previously voiced audio versions of the show and has previously said she would love to “play a Doctor Who monster or something. That’d be brilliant”.
She is not the first Thick of It star to reunite with Capaldi on the show, Chris Addison having appeared in last year’s series.
Front also starred in ITV’s Lewis and recent BBC4 sitcom, Up the Women. It will be her first appearance in Doctor Who which will return to BBC1 in the autumn.
Other guest stars confirmed for the new series include Maisie Williams, Michelle Gomez, Rufus Hound, Paul Kaye and Jaye Griffiths.
When Front first heard Capaldi had been cast in Doctor Who, she said last year she “sent him a really sweary text saying: ‘This is not fucking true? This cannot be true?’
“And he just said, ‘Please, we’re not swearing any more.’” Front said Capaldi was “fantastic” in the role. “It was a very complex, grown up portrayal – I thought it was really interesting.”