adversarial system
The adversarial process of law is most commonly found in North America and Great Britain. ... An analogy for the adversarial system is a sports game, where there are the two teams; the defendant versus the prosecutor (also known as the crown) with the judge who is a referee, ensuring fair play. The role of the judge in the adversary system is to ensure that the rules are obeyed and that the accused gats a fair trial. ... In the adversarial system the judges are appointed by the government or they are elected by senior officials of the Bar.