That's OK Allan, I'm known as something of a pedant myself
You did indeed mention Arthur Ogleseby however, it was Barrie Welham I was thinking of
My recollection (I wasn't there...... it really was a bit before my time
) is APGAI was formed by Arthur Ogleseby, Tommy Edwards, Esmond Drury, Barrie Welham, Jack Martin and finally Jim Hardy in 1967. Now that came from an information leaflet that a family friend gave to me after he attended one of Arthur Oglesbeys' spey casting schools on the....errrr.... Spey.
I
think Peter McKenzie Philips and others were amongst the first to qualify under the new assessments/exams and were almost certainly instrumental in smoothing the rough edges and developing the syllabus post-1970. However, that's the limit of my knowledge on APGAI.
I'll check, but I'm pretty sure I'm right
H