This is a British documentary short about the mail being delivered by the train. It follows the mail from being received and snatched up by the trains. It shows the system as an efficient method manned by hard working people. I don't think that I've ever actually seen someone hangs the mail bags which gets snatched by the train. It's interesting to see these trains close up. It is expertly filmed. The workers are probably not actors which limits any performance. It is still a fascinating time capsule especially for any train lovers.