Quick questions on The criminal trial process: HSC Legal Studies

For indictable offences tried in the District or Supreme Court, the trial is by judge and jury unless both parties consent to a judge-alone trial under the Criminal Procedure Act 1986 (NSW) s 132.

The right to legal representation is foundational. Dietrich v The Queen (1992) 177 CLR 292 held that, while there is no absolute right to publicly-funded counsel, a trial for a serious offence may be stayed where the accused is unrepresented through no fault of their own and would be denied a fair trial.

The NSW criminal trial runs on the adversarial model, in which two opposing parties present their cases to an impartial decision-maker. The judge acts as a neutral umpire on the law rather than investigating the facts, and the jury (or magistrate) decides the facts after hearing both sides. This contrasts with the inquisitorial model used in many civil-law countries, where the judge actively directs the investigation. Supporters of the adversarial model argue that vigorous testing of evidence by each side, including cross-examination, best exposes the truth and protects the accused.

The conduct of the trial is governed by the Evidence Act 1995 (NSW). Evidence must generally be relevant to a fact in issue (s 55) and may be excluded if its probative value is outweighed by the risk of unfair prejudice (s 137) or if it was improperly or unlawfully obtained (s 138). These rules keep the trial fair by filtering out unreliable or prejudicial material, and they give practical effect to the right to a fair trial, because evidence gathered in breach of police powers may be ruled inadmissible.

A convicted person, or in limited circumstances the Crown, may appeal. Appeals from the District and Supreme Courts go to the Court of Criminal Appeal, which can quash a conviction, order a retrial, or vary a sentence. A further appeal lies to the High Court of Australia, but only by special leave, which is granted sparingly for matters of general legal importance. The appeal system corrects errors of law and miscarriages of justice, reinforcing public confidence in the trial process while balancing finality against fairness.