[Stooky Bill]

BTW Now that the Channel 5 documentary was mentioned, I have to say that at the end they mentioned Ncuti Gatwa as the Fourteenth Doctor, so presumably the documentary was filmed before it was revealed that Ncuti is actually the Fifteenth Doctor

Possibly, although I got the feeling it was for the general audience rather than the fans. I'm not a viewer of the programme but I thought the documentary was interesting 

He is the 14th person to play the character, the technicality that he's the 15th Dr Who is part of the plot. A lot of people won't realise that, I didn't