I am not familiar with any groups in England…sorry I can’t be of any help.
I have not told my family of our current problem, his gambling. Last time I told them we were in debt due to his past gambling I felt like I spent more time helping them then they helped me. This time around I am being selective in who I am confiding in. I don’t think my own family will understand with the exception of my sister. I have only told my sister and one good friend, who I trust, to let know of his gambling problem. From past experience, if they are not capable of having some kind of understanding you spend more time trying to make sure they are ok then they provide comfort to you.
Only you can decide if you stay or leave. And there is no magical answer.
I am new to this site as well and it has been a huge help to myself. Hopefully you will find the same.