UPDATE- This is the letter I have sent to Southeastern trying to get an OOC settlement.
Dear Sir/Madam,
I apologise unreservedly and sincerely for having the incorrect travel card for the appropriate zones in which I was travelling. It was a grave error of judgement for which there can be no excuse.
I am willing to hold my hands up and accept that I will be facing a very large fine for my actions, I would like this matter to be kept out of the courts if at all possible as it would put my career in jeopardy, this is especially troubling as I have only just started a new job. I admit I have made a huge mistake and can ensure it will not be one I intend on repeating. The matter has already caused me a great deal of stress and anxiety, it happened yesterday and I haven’t slept a wink. I would like the matter to be resolved as quickly and smoothly as possible and I will co-operate with any course of action you choose to take.
I realise the severity of my actions and once again I would like to apologise for them. I do not wish for this matter to waste any more of your resources and valuable time and don't want to trouble the courts with this incident. I fully realise the severity of this matter and am willing to immediately pay the outstanding fare, any administrative penalty and any administrative costs that may be incurred for the purposes of settling the matter.
Yours sincerely