I got an email from a representative of this U.K. organization called Trans Unite. I don't know if this blog reaches anyone in the U.K. but you know, it's worth a shot.
It's a site that helps trans and non-binary people find local and online support groups.
From the email:
The site is run by volunteers and a not for profit organisation We are the most up to date resource for the UK and online based support groups; users can find a local group and even message them directly from our site using the "Contact Group" button. We don't store any details and the site is secured by SSL.
We're verifying and adding groups on an ongoing basis with our next focus being online groups with Discord Servers, Telegram and Facebook groups becoming increasingly popular to compliment those that meet up in person.
They asked me to add them to my resources page but I don't have one. So here you go.
The site looks legit. I hope this helps somebody. I love my trans and non-binary readers!