The royal family do not prosecute anyone but the law states that the treasure belongs to the crown. The crown and state are two seperate entitities. Agreements were drawn up when William and Mary were offered the throne. The declaration of rights limited the monarchs powers but they retained the rights to summon and dissolve Parliament, appoint and dismiss Ministers, veto legislation and declare war. It is the veto that ranckles. Why do you think the tenants on Charlies land were not given the right to buy or, back to the point, why the crown retains the right to keep found treasue?