Malcolm Tucker and the Unbaked Gingerbread Man to reunite

Capaldi's debut series will end with a The Thick of it reunion. Meanwhile, Addison is the bookies' second favourite to take over as a full-time companion should Jenna Coleman leave the show.

Chris Addison will once again share the screen with his former The Thick of it co-star Peter Capaldi, but this time in a Doctor Who guest role.

The comedian, who appeared alongside Capaldi in political comedies The Thick of It and its big-screen spin-off In The Loop, has a role in the series eight two-part finale, Dark Water / Death In Heaven. Addison himself is keeping tight-lipped on the size or nature of his role, but told

"'Would you like to be in Doctor Who?' is the easiest question I've ever been asked. It's a 35-year dream come true. Seven-year old me would be going off his nut and I'm not far behind.

"It's a great way to spend a couple of weeks, working with people I've always wanted to work with on a show I've loved all my life. My bucket list is quite a lot shorter now."

Addison and Capaldi last clashed on television in their respective Thick of It roles as the wily special advisor Ollie Reeder and foul-mouthed spin-doctor Malcolm Tucker.

Addison joins a long list of guest stars in Capaldi's debut run as the 12th Doctor, including Keeley Hawes, Frank Skinner and pop star Foxes. Following tabloid speculation that companion Jenna Coleman is leaving the show this year, Addison has also found himself the bookies' second favourite – behind Game of Thrones star Rose Leslie – to succeed Coleman.

Doctor Who returns to BBC1 with feature-length series eight opener Deep Breath on Saturday 23rd August at 7:50pm.