Check out this site, fussy-eaters.com. It’s broadly UK-based, and it’s got message boards for adults and for parents of fussy eating children. I also think the name fits better into the British idiom than “picky eating” does. I wish I’d had the courage of my culture to use “fussy” not “picky”.
Anyway, it’s a great forum and community – check it out, if you haven’t done so already.
Adult Picky Eaters UK 
Hi Claire
I thought that was you on the fussy-eaters forum…
I will be joining soon…
I really am getting tired of having to hold back what is on my mind… so I’ll be cutting loose here or there soon…
take care
Brian T
Hi Brian, yes it was me. I noticed they had sent me some traffic, so I went to investigate. I think it looks brilliant.
Looking forward to you cutting loose 🙂
Claire