I was a referee for a chap who needed a top security clearance and one of the nice former Met bobbies who did these things turned up at my office and we went through the paperwork.
At the end he said he just wanted to make sure he'd got my details right and he proceeded to check these. He then said something like: "You seem a presentable sort of chap sqn ldr O D, how is that you're in your late 30s and haven't been snatched up by some pretty girl"? I gave him my best smile and told him I was actually a 'reconditioned singleton' and was sorry to disappoint his fishing to see if I might be gay. I told him where he might find the former Mrs O-D and that was the last I heard of it.
He did tell me that the place where the candidate and I had served was a hot bed of sex, vice and all sorts of other things and when I suggested that I wished I'd known that at the time, he gave me a very dirty look!!!
O-D