66537 leaves Long Marston on 19 June 2026 with the 4Z37 08:39 Long Marston to Doncaster Europort. The very short train is made up of a couple of pressurised hydrogen containers that had been exhibited at the previous day's Rail Live event. Unfortunately at this time of the morning the shadows from the lineside bushes make photography very difficult. It doesn't seem likely that the vegetation will be removed, as the small plot of land is now securely fenced off on all sides!