Sorry if this is a stupid question but are drivers' cabs openable from outside the cab? I always thought they weren't!
You usually need the magic device known as a T-Key. A wonderful device which every proper railwayman should own in his / her lifetime.
Incidentally, we had another (self inflicted) missed stop today. Drunken old sod, not paying attention to the "WE ARE NOW ARRIVING AT COLWYN BAY" ATOS Annie announcement, nor the flashing red "WE ARE NOW ARRIVING AT COLWYN BAY" LED display, nor the fact that the train was slowing down considerably and entering a station platform, decided it was OUR fault for only allowing 30 seconds between doors opening and closing that he didn't rise from his chair 3 rows from the door (he had no luggage) and get off. He had a go at me, he had a go at the guard, and finally, when we did manage to get him off the train at Rhyl (following some VERY pointed, deliberate announcements from the guard "If you are planning to get off, please start making your way to the doors NOW") he decided to saunter to the front of the train and bang on the drivers' cab door and lay into him as well.
On the other 40 or so stops on the journey today, everyone else (drunk, sober, impaired, disabled, young, old) managed it, yet because he didn't, it's our fault.