There are two coincidences: the first in New Orleans, USA, 1986, when my husband and I were queuing outside the famous Preservation Hall to listen to the nightly jazz sessions. Behind us were three girls (backpackers) and, as you do, we started talking. One of them asked where we lived in the UK and when we replied, she casually said 'Oh I have a boyfriend from there' - when asked where he lived she answered with the name of our village and followed by giving the name of the road where we live. On giving the name of the family, I was even more surprised as she gave the name of a neighbour and friend of mine and her son whom I had known for many years. Seemed quite a coincidence.
The second coincidence was in Sydney, Australia, 1999, My daughter and I were having lunch at the famous Doyles Restaurant, Watsons Bay, when the Manager told us we and one other party had missed the last ferry back to the Harbour. He booked us a ferry taxi and whilst waiting at the Quayside we talked to the other party and, to our surprise, found out they were all from Watford, ony ten minutes from where we lived and, not only that, they knew our village well.