Apologies if this has been covered before. Four years ago I got on the wrong train with an advance ticket (Leicester to London). I was late from work and forgot that I was traveling with an advance single, rather than my usual season ticket. I didn't notice my mistake until I presented my ticket. I did not have the means to pay the full open fare. I offered to pay the full fare at the end of the journey. My details were taken and a caution was mentioned but I have never further communication on the matter. My family have lived at the address continuously since the incident. I haven't really thought about it since but am now in a state of anxiety about whether anything will show up on record/CRB check etc.. Any advice would be gratefully received