It would be a civil, not a criminal matter and heard in the high court. Bringing a case would cost you much wonga with no guarantee of winning. If you win and get costs awarded then obviously those costs can only be recovered if the defendant has got the money. Best advice is unless you have lost megabucks over it, have got mega bucks to pursue it, are up for the risk of losing, and the person who did it has got mega mega bucks to cover your costs and pay you what the court may award you in damages then don’t bother.