Apparently it's half term this week, so the train I took into London today which is normally very full was absolutely heaving. (Why GWR decide to put a 5 coach train on for the first off-peak service of the day, rather than an 8, is a different question....). Due to quite how overcrowded it was, the train staff made an announcement after the second stop saying that the first class coach was being declassified, and standard class passengers currently standing could use it.
While that's good for most of the passengers on the train, I imagine some of the first class ticket holders might be a bit miffed, and any joining later on discovering no seats spare very miffed!
That leads me to wonder - when the first class section on a UK train is declassified by the train manager like that, are first class ticket holders entitled to any kind of compensation / partial refund? And does it depend if they now can't get a seat or not?