In the movie "In Which We Serve", a sailor strucks an acquaintance with a girl on a train and a short while after asks his father how did he get to know his future wife. The father replies that he met her on a train. The sailor says:
Well, it's a small world, and no error!
That seemed like a set expression of surprise, but I found only one other instance here.
I wonder what the words "no error" could mean. Do they mean "indeed", "no doubt about it", that is, about the fact that it's a small world?