I am very sorry to hear of this sad news - I remember Colin Pike from the early days of Aikido in the UK - circa 1960 when all of the first 8 dan grades headed for Wales to do what was then a very big seminar - Colin Pike was a driving force from then on.
I know he will be sadly missed by all that knew him. R.I.P. Colin.
Co-author of `Positive Aikido`.