Starvatious is a fantabulous word. I'm not sure it's dialect at all though. I suspect it's Roald Dahl, because he was THE author that everyone was into and playground talk was littered with BFGisms in particular. There was a phase where we all used 'snozzcumbers' as a swear word.

I doubt regional differences have gone fully uniform, or even more uniform. We had Grange Hill and Byker Grove and neither of those really impinged.