Same-sex marriage in Guernsey changes to other laws are approved by the States at its meeting on 26 April. On 26 April, the States approved both ordinances, and the law took effect on 2 May 2017. It applies to the jurisdiction of Guernsey, but not to Alderney and Sark. Alderney, one of the three constituent Channel Islands which form the Bailiwick of Guernsey, has full autonomy in most legal matters (except foreign affairs and other powers that have been transferred to the States of Guernsey), through the States of Alderney. Same-sex marriage is legal in Alderney. On 21 February 2017, the States of Alderney's
Courts of Guernsey is the parliament of Sark. Despite having its own legislative assembly, Sark voluntarily submits to Guernsey in matters of criminal law. The Court of Alderney exercises unlimited original jurisdiction in civil matters and limited jurisdiction in criminal matters. The Court sits with a Chairman (the Judge of Alderney) and at least three of the six Jurats. Appeals are made to the Royal Court of Guernsey, which also exercises some original jurisdiction in criminal matters in Alderney, and thence to the Judicial Committee of the Privy Council. The use of tribunals has increased over the years, with tribunals normally created by