This is easily the best revived series opener so far which is down to the unmatched chemistry between David Tennant and Catherine Tate, and an excellent script that delivers a stunning one off monster.

Russell lives and breathes characters. Watching him carve the new Donna out of the raw materials of the old Donna is a character development masterclass. He moulds her into a compelling continuing character, rather than an entertaining one off. And because she hasn’t had the typical companion journey it’s a much richer characterisation then you’d usually get at this point.

The broad comedy works because everyone plays it for real. Tate is an experienced comic so has a well honed instinct on how to play these scenes, knowing exactly what makes them funny.

Even the adult Adipose in this story are not proper villains. Their scheme, if delivered with consent, would be a win-win for all involved. Low stakes comedy Doctor Who is exactly what you want at this end of the series. The baby Adipose is a truly iconic, beautiful and well realised design. I hope they return in some form or another one day. How is this the same design team that brought us The Lazarus Experiment?

I can’t wait to see more of series 4!