A few years ago a friend and I rolled out of Colne beer festival in good time for the last train back to Preston. My friend, knowing his limited bladder, had a pee before we left the festival (a few minutes walk from the station), one discretely near the station - the bushes survived - but found the loo on the 142 out of order. The guard did, out of frustration at my mate asking where he should pee, say that it was because of people like us that the loo was not in use, but we knew where he was coming from so took it with a pinch of salt. But asked if he could hold the train while people had a pee (we weren't the only ones who'd been at the beer festival) at a station- he was having none of it. By Accrington things were bad, the guard was getting understandably flustered. An empty bottle or two had been filled by some folk. My mate was desperate. I made a pact with my mate that I would obstruct the door of the train while he had a pee on the station. In the end, the guard agreed to hold the train while bladders were emptied.
There's all kinds of wrong and blame going on there. No toilets, peeing on railway/public property, intent to obstruct train doors and I'll wager the guard broke a rule or two too.