Don't forget Michael Narey who was also at the 50 years of Aikido bash in Crystal Palace.
I'm sure he'll have been involved with you wild young things in the 60's.
As I stated in a earlier thread I could possibly remember other names of aikidoka who might qualify as early Aikido pioneers.These names come to mind.Pat Stratford, Eddie Stratton , Tony Drinkwater Senseis. Stratford Sensei I believe did Yoshinkan, Stratton Sensei , founder? of Shudokan, and Tony [from Manchester] was active around the 60s /70s with Aikikai of Gt Britain.