The Doctor Who News Page reports that stand-up comedian Charlie Baker will appear in a forthcoming episode as 'Fat Man', according to his page at Debi Allen Associates. Baker previously starred in an episode of The IT Crowd and has also featured as a panellist on Never Mind The Buzzcocks.
Vic Murray Talent also lists Sold star Dan Johnston as playing 'Thin Man' in the episode. He has previously appeared in The Bill and a 2008 episode of BBC sitcom After You've Gone.
In addition, Spotlight claims that child actresses Fern Duncan and Frances Encell have contributed voice work to the next series. Duncan has previously appeared in an episode of Poirot and featured in recent Jack Black comedy Gulliver's Travels, while Encell has starred in Emmerdale and The Royal.
Spooks and Mistresses director Peter Hoar will also direct an episode of the show's next run, according to his profile with the Curtis Brown Literary and Talent Agency.
The sixth series of Doctor Who is expected to launch on BBC One in the spring.