Gillan said to the Radio Times
"I’m not in it, just to put that out there."However, she also said that she plans to watch the special:
“I’m going to watch it! I think I’m going to be in America, so I’ll probably round up all the people who like to watch Doctor Who in the area. We’ll probably watch it and drink PG Tips and eat Jammy Dodgers, if I can get them.”Gillan recently concluded filming for 2014 Marvel blockbuster Guardians of the Galaxy, where she is playing villain Nebula.
[Source: Doctor Who TV]