There are problems with this episode before the Doctor announces the ‘systems’ aren’t the problem. Robots of Death this very much isn’t.
This is a powerful, moving return to form – Doctor Who doing something unusual and impressive. You’re not going to stop me griping about one thing, though. Unnecessary aliens.
There’s no getting around the fact that Doctor Who just took Nibbler and made him into the Villain of the Week.
I’m not a fan of Dennis Spooner’s Gnaws and now I’m not a fan of Chris Chibnall’s remake of it.