It's not often that a friend of yours becomes the producer of Doctor Who... but that's exactly what happened with Derek Ritchie.
From his days in the Glasgow Doctor Who group, to overseeing episodes of Peter Capaldi's Doctor, working on Class, Wizards vs Aliens, working with Idris Elba, and a host of other shows, Derek Ritchie joins us on the Power of 3.
And stand by for some fantastic new facts!
