Meeting mother on the Tube

Forty years ago I was a young solicitor for a large property organisation in Westminster. I lived in London but the family home was way out in Essex. One day I was out on business in Leics., and returned to London at about 5pm. To get back to the office I took the tube to Victoria, and changed to travel one stop on the District Line to St.James' Park. I found a seat for this brief journey and sat down. A few seconds later a very familiar voice said "Tim!" (my name in the family). In the London rush hour I had found a seat next to my mother! I had no idea she was in London, but she had been attending a committee meeting in Victoria, and had just begun her return journey to Essex. Apparently my shiny shoes had made her look up to look at their owner. Naturally our mutual exclamations of surprise amused the other passengers.