Bletchleyite
Veteran Member
Having a train where those who want to be sure they have a reserved seat get one, and having a train where those who want to buy at the last minute can do as long as they are willing to take the risk that they won't get a seat, are not mutually exclusive options, though.
Unless you're going to put Merseyrail style hit squads on board to move people who sit in someone else's reserved seat, they absolutely are. People don't respect reservations and often won't move when asked, and sometimes reservations aren't even placed or working (then you get arguments about what the rule is/should be as the railway never provides signage to say what it is, which wouldn't be hard at all). It's a significant stressor for particularly older people and those travelling with young children and the likes.
Also - how do you reconcile the aim of reducing to a minimum the chance of someone sitting in your reserved seat, with offering the "flex" fares which allow people to travel on services other than the one they've booked onto?
The Flex fares encourage you to change your ticket on the app to get a reserved seat, and set the expectation that if you don't you'll be standing. I can see an outcome of the trial being that the flexibility is ONLY offered via the app to be honest, then that problem is removed. You'd have to slightly modify the conditions to be "70 minutes, or the next/previous train if there isn't one within 70 minutes or it's fully booked" I suppose.
I suspect if one was to survey, the overriding preference from those travelling London<->Edinburgh or further would be for full compulsory reservation. Hardly anybody makes that sort of journey on a whim. London to Birmingham or Manchester would obviously be quite different.