Sykes v His Excellency, Bill Hayden, The Governor-General of Australia

The applicants, Mr. and Mrs. Sykes, sought judicial review of a decision by the Governor-General, His Excellency Bill Hayden, to refuse to grant them a pardon. The applicants had been convicted of criminal offences and had exhausted their avenues of appeal. They contended that the Governor-General's refusal to grant a pardon was unlawful and sought orders directing the Governor-General to grant the pardon. The matter came before the High Court of Australia.

The central legal issue before the High Court was whether the Governor-General's exercise of the prerogative power to grant or refuse a pardon was subject to judicial review. Specifically, the applicants argued that the refusal was based on irrelevant considerations and was therefore an improper exercise of the prerogative power. The Court was required to determine the extent to which the courts could scrutinise the exercise of this executive power, which is traditionally considered to be a matter for the Crown's discretion.

The High Court held that the prerogative power to grant or refuse a pardon is not amenable to judicial review. The Court reasoned that the exercise of this power is a political act, falling within the realm of the executive government's discretion and not subject to the ordinary processes of judicial scrutiny. The judges affirmed the principle that where a prerogative power is exercised in relation to matters of state or policy, it is generally not justiciable. Consequently, the Court found that it had no power to interfere with the Governor-General's decision. The application was dismissed.