Steven Moffat has revealed it was “unbelievably tough” bringing the 50th anniversary to life.

Speaking to Three If By Space: “It was unbelievably tough actually making the 50th. It was extraordinarily difficult mainly because we were trying to push the boat out and as ever we didn’t have enough money. We were making a feature-length Doctor Who on the schedule and budget for an hour. We’re doing it in 3D on the budget for 2D.”

However, he hastens to add that budget is not exactly a new problem for the show and “You will not see that on screen. It looks amazing.”

Asked if he felt any pressure with such a monumental episode: “It’s always pressure on Doctor Who, it really is. I’m always wary of the episodes where you announce in advance ‘This is a very important episode!’ because it’s up to the audience. Blink has become my calling card and that was a filler episode to get around a scheduling problem!

“So I’m very wary of saying this one is really good in advance. I think it’s a lot of fun and I think you’ll see some stuff you haven’t seen before. And you’ll see it in three dimensions if you don’t mind the headache and glasses.”