This also appears to be a good list of support groups for UK and Ireland:
https://www.mesupport.co.uk/index.php?page=uk-republic-of-ireland
in fact this seems to be a good online resource..........not heard of them before.
From their homepage:
"My name is Louise Sargent and I launched M.E. Support in 2001, having been living with Myalgic Encephalomyelitis for nine years, in a bid to raise awareness and help fellow sufferers. This is a UK-based website providing worldwide information to hundreds of thousands of visitors each year. I manage M.E. Support daily with the help of a small but invaluable team of
Volunteers. I have also been able to expand offline, such as advising the media on M.E. and guiding medical professionals."