what on earth is a 'Caution' from 'National Rail'

I was read my rights, but this wa not a poilce caution. I asked the inspector and he said it wasnt. I think it jsut means, that there is a possibility it will go to court. I just wana know how much im guna have to pay.

Sounds to me like you got an MG11 I'm afraid, which is an evidence document for if you get summoned to court. Bear in mind fare evasion is a criminal and not civil offence.

all over a quid- i very much doubt they would prosecute, or for even initially giving them the wrong details. If they do they're sad as ****.

Was this an attempt at being funny? It was quite funny, but not very...

btw i didnt get a penalty fine. i was about to then the smug idiot decided to change his mind and give me a caution, which as my title suggests, i have no indication off its meaning.

No! It's genuine!
They put the person's name, road name and area, and a lot of people who get my morning train are often getting penalty fares
Never heard of a caution before though he must have liked you

i very much doubt they would prosecute

I wouldn't be so sure.

If we are referring to South West Trains, it's highly likely they will. Other operators I don't know about as much - but I think around 90% of the MG11s I know about have been followed up, rest were dealt with out of court by revenue protection.