From the advice which expert forum member
@Hadders gives in cases such as this, adapted for your circumstances.
Travelling without a ticket that covers your full journey is a criminal offence and GTR are entitled to prosecute you in the Magistrates Court if they want to. Generally speaking most Train Operating Companies are normally reasonable to deal with and will normally offer an out of court settlement in cases like this as long as you co-operate with them, and haven't come to their attention before.
What happens next is they will write to you saying they have received a report and are considering prosecuting you. This letter can take some weeks to arrive due to the number of cases in progress at any one point in time.
I suggest a short, concise reply that mentions:
- That you are sorry for what has happened
- What you have learned from the incident
- That you are keen to settle the matter without the need for court action
- Offer to pay the outstanding fare and the train company's administrative costs in dealing with the matter
If you are offered an out of court settlement expect to have to pay the outstanding fares at the full Anytime rate, with no credit given for the invalid tickets you purchased in addition to an admin fee, typically £150. GTR will search your online ticket purchasing history to see if you have done this before and if this indicates you have done this before they will factor in the cost of these journeys into the settlement fee.
Paying a settlement might feel like paying a fine but technically it isn't. Only a court can impose a fine as a punishment upon conviction so you don't want to pay a fine, you want to pay a settlement!
When the letter from GTR arrives post a redacted copy of it in this thread, along with your draft reply, and forum members will proof read it for you.
Do not use AI to write the letter as such letters invariably sound insincere. You do not have to give or explain the reasons for shortfaring as it is understood to be saving money for one reason or another.