Following on from this thread, so as not to distract from giving advice...
Playing devil's advocate a little, 9.5 says:But the fact that the Network Railcard conditions suggest a Penalty Fare can be issued* is not fatal - as this is contradicted by the National Rail Conditions of Travel, which states in 9.5 that the penalty for travelling on a time-restricted ticket at an invalid time is simply payment of the excess. And condition 1.2 of the Network Railcard conditions says:
So seeing as the ticket was an Anytime, could it not be argued that the ticket was not time-restricted, but the discount was? In which case, the Railcard terms would apply and a Penalty Fare would be appropriate?9.5 Where you:
9.5.1 are using a time-restricted Ticket (such as an “off-peak” or “super-off-peak” Ticket) that is correctly dated but invalid for the service on which you are travelling; or
9.5.2 are using a route for which your Ticket is not valid; or
9.5.3 break your journey when you are not permitted to do so;
you will be charged the difference between the fare that you have paid and the lowest price Ticket that is valid for the train you are using.