Hi naomi,
It was a long time ago, in the sixties, all I recall, was quite a few 'recruits', we had a seminar, of which i remember nothing, what I do remember, was that they then interviewed us singularly, I was in the forces at the time, and they wanted to know as much as possible, I had a primitive lie detecter attached, and they were asking me questions about the army, and the graph was jumping all over the place with my answers. eventually, I walked out, and reported what had happened, but I don'r thing the police or army took any action.
Sorry I can't tell you more.