I think that the point that the train drivers in this thread miss (and I'm not staff bashing here) that the typical commuter with a £100k a year job in the city is used to working through breaks/staying late on a night when the needs of the job demand it.
Drivers/guards rarely display this work ethic - partly because of legislation and partly for union rules.
Not sure why you say only people on 100k a year. I work in the city for 27k, and can also be expected to work well beyond my agreed hours for zero overtime pay. I understand why drivers need scheduled breaks, but guards?
I use trains a lot, and besides opening and closing doors, they usually spend 99% of their time with their nose buried in a newspaper, which is a break by most other people's standards. I know I don't work in the railway industry, but I find it particularly galling to be stranded somewhere for an hour because the guard has gone shopping. Surely the passengers have paid good money to travel from a to b, and that should come first. And I reject any health and safety arguments over this, as it is the guard we are talking, not the driver, who needs to concentrate on what is ahead of him. If there are any legitimate health and safety reasons, I would like to hear them. I've only scanned the last couple pages, and I've not seen any made.