One minute my LNER train ticket was valid, the next it wasn’t

I was assured I could take a later train when my one was full, but the inspector demanded £88 to stay onOn a journey from London King’s Cross to Edinburgh Waverley with LNER, I had a ticket for the 14.00 train. I am a student and was moving back to Scotland from London for the new college year, carrying three large suitcases.I was unable to get on the 14.00 train as it was full. Seeing me struggling to board, a member of LNER staff told me to get on the next train at 15.00. She assur