Based on this story its certainly not as simple as just getting the fare:
http://www.yorkshireeveningpost.co....then-threw-her-out-of-leeds-station-1-8742192
A Northern spokesman said: Good customer service is a priority for Northern and we do not accept or tolerate any behaviour from our staff which makes customers feel uncomfortable.
What a load of tosh ! Northern have been accepting and tolerating exactly that sort of behaviour ever since they took on the franchise.