True.
Business Zone? If Chiltern can get away with it...
This is just bizarre, they aren't 'getting away' with anything! If you don't like that there's a business zone there don't sit in it!
It is down to intent vs. NRCoC. Greater Anglia do not intend to restrict their tickets from use on the Stansted Express. Southern do.
I have a lot of respect for you Neil. Don't throw it away by imagining that you
know this sort of thing. You do not. To anyone else here who thinks they know what the Train Companies 'intend' - please don't get too high an opinion of yourself. For a start, it is often very very complicated and you simply cannot divine an original intent. For example Horsforth to Filey fares are only available in route 'DIRECT'. This journey cannot be made in fewer than two changes and some people at TransPennine seem to think it's only valid via Semer, others think its only valid via Hull - still others think its only valid via Harrogate, in combination with the previous two options. Other changes around this have been made since it was implemented such that nobody now knows exactly what was and was not intended for this and similar fares. Which brings me to the second point, which is that very often the people who created fares or designed these systems did not consider some eventualities, such as this one, that may arise. In the absence of any further judgements and changes made by the TOC, neither you nor they can purport to know what was intentional or otherwise. Think of it as a little bit like authorial intent when you have a good novel - you never will be able to tell exactly whether or not the author realised the effect of that snippet you picked up on.
All you have to go on are the facts, and they have been presented succinctly by yorkie on this particular topic many times over...
Bonus round: get the 'intention' of
this fare right just by looking at it - PF if you make any mistakes though :P