However, once again I'm under the radar and I'm not too sure whether Northern Rail have much of a case this time, but they've decided to try and pursue me for a £1,000 fine.
until I'd given them some information which they used for the fine they sent me.
Can we be crystal clear what has been received here, please? Is it:
-a letter from a magistrates court setting out that you have been convicted and fined?
-a letter from northern rail saying you could be fined 1k if you travel without a railcard
-a first letter from Northern Rail saying they intend to commence an action against you
-a second/third letter re the above
Do be aware that some offences (I'm thinking of Fraud Act here, but others also) are not summary offences where the information must be laid within six months. Also, even for a byelaw matter, you're not out of the six months deadline yet, when court paperwork-processing delays of maybe six weeks are factored in.
I'm just saying the above for completeness, and in case the op's story is not as stated. I do not mean any slur on them.
If everything is as per the thread, then work on getting a 'no further action' from the prosecutions dept, then look to request compensation/apology etc.