RAF Clubs, Associations and Societies. Badges.

Hi there people.

I recently became very interested in some of the RAF badges (or presumed to be RAF) that were appearing on Ebay.

I have recently managed to acquire a RAF Equestrian badge, a RAF Rugby Union badge and a RAF Angling Association badge.
The Equestrian badge had been given a wrong ID of being a Sweetheart Brooch.

I have others such as a Pratt and Whitney engine badge which is really nice but very small. This also has a keeper chain on it.

My question is does anyone know of a guide to these badges either in book form or an online reference. It would be great to know exactly what I was looking at and whether it was an official recognised RAF club etc.

Thanks for any help in advance.