Churchill to return to Who? [UPDATE]

Speaking at a Doctor Who event at The Ritz Cinema & Theatre in Lincoln earlier today, actor Ian McNeice revealed that the character of Winston Churchill would make another appearance in Doctor Who. Their Twitter feed stated:
"Ooooo spoilers....Winston Churchill to return to Doctor Who"

It is not currently known what episode McNeice was referring to, or which Doctor (or Doctors) he would be facing. Churchill was last seen in the Series 6 finale, The Wedding of River Song.

UPDATE: The initial tweet has been deleted, seems they might have misinterpreted his words.

Thanks to energyUK