When I was working as a solicitor, I once went to interview a witness in Kidderminster. I had been living outside Yorkshire for about 10 years. No sooner had I got in the door than he said 'you come from Leeds, you come from Crossgates'. That was spookily true. We chatted a little and it turned out that he had gone to the same Catholic primary school as my father and me. He was a little older than my father.
When I had got my witness statement, I asked him how he was able to place my accent so easily. He replied that it was my use of 'right' and the way that I had pronounced it. I had said something like 'Right, Mr x. If you remember, I've come to take a statement about y.'
Or, thinking about it he could simply have remembered someone from his childhood with an unusual spelling of a fairly ordinary surname.