I know a lot more about the legal requirements for breaks during work than most people on here seem to. Just because it's the industry expectation or there's an agreement between a union and an employer doesn't make it legally required.
Drivers need longer breaks from driving than from working by law. That's what you and
@newtownmgr don't seem to want to believe. A driver unlocking the door, boarding a train and reviewing the timetable for their next service is working but they aren't driving at that point. If you think that's legally classed as driving you better tell the government to come up with a replacement for the trackers in buses, lorries and coaches, to ensure they track the hours the drivers are working but aren't driving.