Hi Rainbows.
As another mourner of the former kenyons, I've also been looking for new suppliers as well. I'm currently talking to Macc Laser (off brook st) about some sheet metal, and wondered about Hall and Pickles at Poynton…. did you try them? There's still some angle and plate at Swindels Scrap metal off Windmill street but nothing like there used to be when they took stuff from local engineering firms (Scraggs, Sisis, AZ) etc.
I also buy stuff from Joe at Macc Models, and he's very helpful and has an increasing stock range.
After those I don't know where to go locally, I fix odd bits of farm stuff for friends and sometimes need bigger "lumps" of material they mostly seem to come from scrap or by post