Doctor Who: 14 Cool Details Revealed In Steven Moffat's Eleventh Hour Commentary
3. The Man From Jodrell Bank Is Played By The Director's Brother
After the Doctor breaks into Jeff's bedroom and borrows his laptop, he hijacks a video call in which several scientific experts are discussing the current alien threat.
One of these men is from the Jodrell Bank Observatory in England, and according to Wenger, the man who plays this role is the brother of the episode's director, Adam Smith.
In addition, Moffat adds that Smith tried to get him to do a cameo in this section, but he declined. On reflection, that was definitely the right call: as funny as a Moffat cameo would've been, it would also have been just a bit too self-referential.