Watch: John Bishop joins the cast of Doctor Who
John Bishop has confessed he made a slip-up after his Doctor Who casting that was described by the BBC as "the cardinal sin".
Bishop's character — who is a complete secret other than the name Dan — will join Mandip Gill's Yaz as one of the companions of Jodie Whittaker's time-traveller.
But the star revealed on Friday's episode of The Graham Norton Show that he had already made a faux pas when it comes to the show's renowned secrecy.
The blooper came while Bishop was taking part in a Q&A over Zoom with drama students in Liverpool, focusing on acting and stand-up comedy.
He said: "One of the questions was: 'Can you tell us anything about your character in Doctor Who?' you know, 'where does he come from?'"
Bishop thought nothing of answering the question in vague terms, making a self-deprecating reference to his distinctive accent.
"I went: 'Well, where do you think he comes from? Have a guess!'," said the comedian.
"You know what I mean, I'm not Tom Cruise. I can act as long as the character happens to look and sound a lot like me."
Despite the rather small revelation that Bishop would be using his normal accent, this sparked feverish speculation about the show's new era unfolding in Liverpool.
Bishop added: "Then the BBC phoned me up and said: 'You've broke the cardinal sin. You've told them something about Doctor Who'."
The 13th series of the revived run of Doctor Who is due to air later in 2021, having begun shooting in November last year.
Watch: Jodie Whittaker hasn't looked at another role since Doctor Who