if i can make one suggestion - phone the police and
enquire as to the current status on the law regarding trades.
down in hampshire (where police areas are being rolled into one large one) they have a head centre as such where you can phone up and make enquiries. i'm not sure if it would be the same where you live, but if they cannot tell you then and there on the phone, they will actually research it and call you back with an answer.
it's best to know where you stand within legal limits. and if he's 14, he is no longer too young in the eyes of the court system to be tried if there are still problems.
unfortunately, my a-level law is as useful as your frame
mew