A crime is a violation of a legal statute for which the state has prescribed a punishment.

In British civil law, there is no prescribed punishment, and violations are not criminal. Other violations of statutary or common law are criminal, though many minor offences are treated as marginally criminal- some motoring offences, like speeding, are treated as not incurring a criminal record. Parking offences inhabit a sort of twilight world in which the offence is itself not criminal, but non- payment of a fine incurred is. It shares this status (I believe) with certain local taxation violations.