Doctor Who: 20 Things You Didn't Know About The Day Of The Doctor
16. The Initial Plan Featured The Ninth Doctor
While John Hurt's turn as the War Doctor went down a treat, there was some disappointment about the absence of Christopher Eccleston's Ninth Doctor.
In his initial plans for the anniversary special, Steven Moffat had intended for Nine to feature. He reached out to Eccleston, who unfortunately decided against reprising the role, and the War Doctor was created in his place.
No hard feelings here though, because Eccleston himself has since explained that he loved what Moffat and Hurt did with the character:
"I just thought that script was immaculate, and I think it added to the canon of Doctor Who in a way that me coming back wouldn’t [have done]. I think the War Doctor was a brilliant working of Steven Moffat’s imagination, and I loved watching [John Hurt] do that."