You mention watching past multi-Doctor episodes; have you pretty well immersed yourself in the show’s history now?
Yeah! As soon as I got the job, I went through tonnes and tonnes - I got them to send me pretty much every episode that I could get my hands on. So I went through Troughton, Pertwee, Baker, a bit of Hartnell… So I’ve dipped in. I hate to say, I’ve never watched really any Colin Baker episodes.
My first Doctor, and I told him this, was David [Tennant]. I did it the wrong way round! I watched all of David’s stuff and all of Chris’s stuff, and then I went backwards… I was always aware of Doctor Who, but I didn’t grow up with it.