Don't know if it's of interest to anyone but I've just been having a look at the the document about stage 3 on the atcocareers website in prep for my interview tomorrow and noticed that NATS have modified it since I last looked at it. If anyone else is preparing for stage 3 it might be worth having a quick look.
The good news is that they only seem to have taken things out of it rather than adding anything new. They've removed the three really awkward competencies (numerical awareness, spatial awareness & information processing capacity), but otherwise it is unchanged as far as I can tell.