There's long been a "rivalry" of sorts between BSAC, British Sub-Aqua Club, and PADI, Professional Association of Diving Instructors.Caravan Utilising Nomadic Traveller
I don't hold with any of it and frankly I don't care which organisation a diver has trained with. I generally dive by myself but if I dive with a buudy all I ask of them is that they dive safely and keep a good watch on their air consumption. On the occasions when I've been interrogated about my training by one of the old guard I keep a straight face and tell them I trained with Caledonian Underwater Nautical Training.
The looks on their faces when the penny drops is priceless .