Thanks for all the replies. I think there is most definitely a need. In relation to money, I am sure that funding can be sourced if there is a good case put forward for such support groups.
Such support groups would really need to encompass individuals from a variety of groups; for those who have either already left high control pressure groups or those wanting to leave and are in need of assistance.
Here is the link to some of the stuff FOOTSTEPS provide for its members.
In the Netflix documentary, I was particularly moved by the genuine sincere support given to the young woman who had to give up her children to her still in husband.