The BBC has revealed another publicity photo from today's readthrough of the script, announcing another guest star for the 50th Anniversary - click through to find out who it is...

Joanna Page! Although probably not known to many international viewers, Page is known in the UK for her titular role in the hit comedy series Gavin & Stacey, which ran between 2007 and 2010. She was most recently seen with her Anniversary episode co-star David Tennant in the (apparently awful) Nativity 2: Danger in the Manger last year.

So, not a huge piece of casting like, say, a returning character, but still! We're starting to learn actual, tangible facts about the 50th Anniversary. Will this stop Doctor Who fans from moaning with completely unsubstantiated claims?

*checks Gallifrey Base*

Nope. Apparently not.