
The announcement of the departure of the current Doctor Who always brings with it the kind of speculation that otherwise only accompanies a prominent football team requiring a new manager or the need for a new James Bond.
Doctor Who casting-related frenzy, though, always has greater breadth and depth. Actual qualifications, UEFA badges and so on, are required to coach a football team at a certain level, and playing Bond is hemmed by the characterisation – although not necessarily the ethnicity – of the person in Ian Fleming’s novels.