I'm sure you have already mentioned it, but when were you training regularly at Ryushinkan? As I didn't really start practising regularly with KS until about 1981, your recollections are very interesting to me.
I returned from the USA in 1975. I lived in Brighton initially, but moved to London in 1976. Since I was a Ph.D student at University College London, I trained at the closest dojo, which was Ryushinkan in Albany Street. If you remember other names, Barry Hutchinson, Roger, Francis, Ross (an Iranian student), Murray Walker and the Helsby brothers were training at the time.
On occasion, I went to Oxford to teach at the dojo. I think your father might remember. I left the UK in March, 1980.