Speaking on BBC One's The One Show last night, Capaldi said:
Well I'm not looking for a new assistant. I don't know where these rumours have started. I mean I've read that she might be leaving at Christmas but I don't even know if she'll get to Christmas. You've just got to watch and wait and see what happens!Meanwhile, Coleman addressed the rumour herself on ITV's This Morning:
The truth is ... I don't want to tell you the truth because I quite like these rumours. I think it's really interesting because, suddenly, people don't know what's going to happen in the series, people don't have any idea, so this speculation is quite good. People can now watch the show not knowing if I am or not, and that is quite exciting.
The rumour first stemmed from a report about Coleman leaving in The Mirror last weekend, leading to inevitable speculation during the course of this week as to who would be in the running replace the actress in the show.