Just stumbled on this post and what a coincidence I actually attended a meeting at the b/mouth group many many years ago.
I found it quite uncomfortable to be honest and knew it wasn't for me.
At the start of the meeting you stood up one at a time, said your name and that you were an overeater, then the person went around the group and each individual gave a run down of their week. We were clapping people who had managed to not make themselves sick or only been sick say 2 times that week. There were a lot of people who obviously suffered bulimia. I am not one of them and really just love food and tend to eat too much.
I vaguely remember at the end of the meeting holding hands in a circle and they all sang a song.
If you think it might help you it's worth just going along to a meeting it wasn't for me but judging by the size of the group it's obviously beneficial to some.
It used to be in a building at the back of the YMCA in b/mouth can't remember the name of the road that runs at the back of westover road.
Hope you find something to help xxx