I think that The Deep Freeze Mice should be added to ProgArchives.
Based out of Leicester, they produced ten albums in the 1980s. Although heavily influenced by the new wave scene, they were really a prog band in disguise (in my opinion!)
Brilliantly original ideas, shifting time signatures, humour, weirdness and 20-minute tracks! What more could you want? Possibly my favourite band of all time (and I don't waste time listening to anything that isn't prog).
Here is their Gates of Lunch album:
https://www.youtube.com/watch?v=Ij6gnGcmYZA
Godzilla Loves Me I'm an Ashtray (just one of their many "eclectic" tracks, so be patient with it):
https://www.youtube.com/watch?v=_zhGLMPA7r0