GISTERS in the UK
There are a small number of us from the British Isles eg mein South London. This is a very lively and informative forum, and you should feel free to make as much or as little use of it as you need to.
You are welcome to "join" that list, as well - where most people are from the UK with a smattering of people from Spain, Ireland and, possibly, some other places in Europe. I do know that there are some gist patients in Ireland.
The UK equivalent to the GSI email forum is at: GISTSUPPORTUK@MAILTALK.AC.UK.