Thanks, one of the most useful pieces of information I've acquired all year. Never realised o/p fares to London were valid for that train!
If I was the guard's manager, I would consider that to be a very serious offence, how can I make a complaint that hits home fast rather than having to wade through the customer services team quagmire?
It's probably a waste of your time trying to get any kind of action taken over the announcement - in the unlikely event that GA actually understand what the problem is, it would take something far more serious (perhaps involving a safety failing) for there to be any kind of disciplinary.
A useful rule of thumb for the validity of (Super) Off-Peak tickets for journeys via London is the Network Area Rule. This dictates that if a journey which is via London starts outside the
Network Area and goes to destination also outside the Network Area, then only the leg from the origin to London has restrictions, and not the other leg from London to the destination. So, for example, a ticket from Bristol to Doncaster 'via London' is restricted between Bristol and London only - it does not carry restrictions between London and Doncaster. A ticket in the opposite direction is restricted between Doncaster and London only, and not between London and Bristol.
If you start outside the Network Area on a journey to somewhere within the Network Area (going via London), then the part between London and the destination is also unrestricted. However, this applies in both directions, unlike above where both origin and destination are outside the Network Area. So a ticket from Bristol to Walton-on-the-Naze is unrestricted between London and Walton-on-the-Naze, but a ticket in the reverse direction is still restricted between London and Bristol (and not between London and Walton-on-the-Naze).
If this confuses you, simply try looking up tickets from places outside the Network Area to other places outside it (via London), and then try reversing the direction. The restriction code should change. Try looking at tickets from places within the Network Area to places outside it (via London), and then try reversing the direction. The restriction code won't change.