Do you mean Pat or Ron Campbell? Ron (R.I.P.) was the "big cheese" who I remember from my instructing days. He sat on all the committees, chairing several and seemed to breathe a touch of common sense into the various other bodies involved with the PPL and it's associated training. He may well have been in a similar capacity when the IMC rating was introduced as he was certainly BLAC chairman when I obtained my instructor's rating in 1974. Eventually I got to meet him and enjoyed the privelege of a couple of his instructor renewal flights.
If only he was still with us today we would have had none of this 2 day seminar as part of the instructor renewal nonsense.
P.P.