Jenna-Louise Coleman, who is of course to be the new companion for Doctor Who, has revealed that she’s come to believe that 7 is her lucky number, and that while filming for Titanic, she’s got used to pretending to be talking to someone while filming…

And as of course many of Doctor Who’s plotlines feature characters who are CGI animations, that’s a skill she’s going to find very handy!

But first, of her lucky number being 7, Jenna – who formerly starred in Emmerdale as Jasmine Thomas – told the Sun’s TV Biz, “I worked out that Men On Waves is an anagram of Woman Seven, because this is the seventh (revived) series.

“Weirdly, seven is my lucky number and this is my seventh job.”

Jenna went on to reveal that as many of her scenes in Titanic required that she speak to someone who wasn’t actually present – and would be added in by editors later – she used a paper cup to “aim” her lines at…

She explained, “I haven’t had to talk to anyone who wasn’t there before, but in Titanic I did have to talk to a paper cup as if it were a person on a ship.”

And of having to keep it secret that she’d been cast in the role of companion on Doctor Who, Jenna revealed that she even gave herself a codename.

She said, “I wasn’t allowed to say it was Doctor Who at any point — not talking to my agent, not when I arrived at the audition, and I certainly couldn’t tell anyone at all what I was up to next.”

Here’s a clip of Jenna talking about landing the role…