I received a caution when I was 15 and then had a lecture from the police.
The first time, a friend of a friend had stolen a moped and ended up crashing it. He got caught and told the police that there was a large gang of kids involved and named me. I denied all knowledge (as it was nothing to do with me!) but was cautioned for it. They said it would be wiped from my record at 16, so I assume it is not on my record anymore.
The second time was not long after the above incident. I was walking home with a mate and we decided to take a short cut across a railway line. A policeman saw us and gave chase but we got away easily. But some other kid had seen us and told the policeman who we were, so he came to my house to tell me off. It was actually quite funny as he said we ran down the embankment like gazelles and he would have killed himself if he had tried to follow us.
I was also visited by the police to be a witness (I think that was the same year as both incidents above!). A mate was being accused of flashing and wanted me to back him up that he was only mooning. I told the police the truth that he was just mooning and he was cautioned for indecent exposure.
My parents were not impressed by any of the police visits (even though I only did something wrong on one of those occasions!) and so my life of crime ended early. Well, my life of being caught at committing crime anyway...