Ticket office staff won't help you there.

they literally tell yoy which stations are accessible and which ones arent.

"get off the train in a wheelchair"

Nothing to do with accessible stations, where they simply look up entries in a database and will have very little personal knowledge.

I dont think this is true, but suppose it was - so what? If I am travelling eith my daughter I often need advice from the ticket office folks. It does not matyer how they aquire it.

Additionally, often the ticket office gives better rates -

https://twitter.com/CraigJordanBak1/status/16786743395735101...

The fact that you dont know this, betrays the fact that you havw no idea how the UK ticket prices are actually set