I don't know why (and would be interested to learn the reason), but there was a time in the late 1980s when a high proportion of St Hill staffers - or at least those one would see around East Grinstead - were of Israeli origin.
What I know is that when I was involved with London Org in
very early eighties there were several Israeli staff. There was probably a natural flow to St Hill. Also circa 1990 the C/S was an israeli trained at St Hill under Ros de Lacey. I was audited by her in London around that time.
I suspect that at that time there was not much opportunity to do Scn in Izrael.