Re: The what?
"Really? Would be interesting to know exactly who or what pays the bills for such a grand name"
AFAIK it's what used to be the PCG. I don't know why they came up with such a daft rebranding (except that most rebrandings are daft); I'd given up my membership when I retired so wasn't
a party to that discussion able to pour copious contempt on it. But, in answer to your question: its members.