Same-sex marriage is legal in all parts of the United Kingdom. As marriage is a devolved legislative matter, different parts of the United Kingdom legalised at different times; it has been recognised and performed in England and Wales since March 2014, in Scotland since December 2014, and in Northern Ireland since January 2020. Civil partnerships, which offer most, but not all, of the rights and benefits of marriage, have been recognised since 2005. The United Kingdom was the 27th country in the world and the sixteenth in Europe to allow same-sex couples to marry nationwide. Polling suggests that a majority of British people support the legal recognition of same-sex marriage.
The Chagossians are an Afro-Asian ethnic group originating from freed African slaves brought to the Chagos Islands, specifically Diego Garcia, Peros Banhos, and the Salomon island chain, in the late 18th century as well as people of Asian descent. Under international law, they are the indigenous people of the Chagos archipelago. Most Chagossians now live in Mauritius and the United Kingdom after being forcibly removed by the British government in the late 1960s and early 1970s so that Diego Garcia, the island where most Chagossians lived, could serve as the location for a United States military base. Today, no Chagossians are allowed to live on the island of Diego Garcia or anywhere in the Chagos archipelago, despite many of the islands they used to inhabit being over 160 km away from Diego Garcia.
The Marriage Act 1961(Cth) is an act of the Parliament of Australia which regulates marriage in Australia. Since its passage in 1961, it has been amended on numerous occasions and applies uniformly throughout Australia (including its external territories); and any law made by a state or territory inconsistent with the Act is invalid. The Act was made under the power granted to the federal parliament under section 51(xxi) of the Australian Constitution. Before the passage of the Act, each state and territory had its own marriage laws. The Act only recognises monogamous marriages that comply with the requirements of the Act; other forms of union, including traditional Aboriginal marriages, are not recognised. However, the Family Law Act 1975 treats de facto relationships and polygamous marriages as marriages for the purpose of recognising the rights of parties at a breakup. Since 2009, the Family Law Act 2009 has also recognised the property rights of each partner of de facto relationships on separation.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the British Virgin Islands face legal challenges not experienced by non-LGBTQ residents. Same-sex sexual activity has been legal in the British Virgin Islands since 2001.
The British Indian Ocean Territory (BIOT) is an Overseas Territory of the United Kingdom situated in the Indian Ocean, halfway between Tanzania and Indonesia. The territory comprises the seven atolls of the Chagos Archipelago with over 1,000 individual islands, many very small, amounting to a total land area of 60 square kilometres. The largest and most southerly island is Diego Garcia, 27 square kilometres, the site of a Joint Military Facility of the United Kingdom and the United States. Official administration is remote from London, though the local capital is often regarded as being on Diego Garcia.
LGBTQ+ rights in the Cayman Islands are regarded as some of the most progressive in the Caribbean. While the British territory still has a long way to go, it continues to relax its stance on this subject. Both male and female types of same-sex sexual activity are legal in the Cayman Islands. Same-sex unions became legal in 2020.
R v Secretary of State for Foreign and Commonwealth Affairs, ex parte Bancoult [2008] UKHL 61 is a UK constitutional law case in the House of Lords concerning the removal of the Chagos Islanders and the exercise of the Royal Prerogative. The Chagos Islands, acquired by the United Kingdom in 1814, were reorganised as the British Indian Ocean Territory (BIOT) in 1965 for the purpose of removing its inhabitants. Under a 1971 ordinance, the Chagossians were forcibly removed, and the central island of Diego Garcia leased to the United States for use as a military outpost.
Lesbian, gay, bisexual, and transgender (LGBT) people in the British Overseas Territory of the Falkland Islands enjoy most of the same rights as non-LGBT people. Marriage and civil partnerships have been open to both opposite-sex and same-sex couples since 29 April 2017. Discrimination on the basis of sexual orientation is constitutionally banned. Additionally, attitudes are largely positive; a public consultation found that 90% of respondents were in favour of same-sex marriage.
Sovereignty over the Chagos Archipelago is disputed between Mauritius and the United Kingdom. Mauritius has repeatedly stated that the Chagos Archipelago is part of its territory and that the United Kingdom claim is a violation of United Nations resolutions banning the dismemberment of colonial territories before independence. On 22 May 2019, the United Nations General Assembly adopted a non-binding resolution declaring that the archipelago was part of Mauritius; 116 countries voted in favor of Mauritius while six opposed it.
The Foreign Marriage Act 1892 is an Act of the Parliament of the United Kingdom of Great Britain and Ireland, enacted to provide legal authority for marriages of British subjects performed outside the United Kingdom. It authorised British officials abroad to perform the marriage ceremony, and set out the necessary formalities to be followed, such as notice requirements and registration of the marriage with the British government. Marriages performed under the act would then be recognised under British law as if they had been performed in the United Kingdom. The act also provided that marriages performed abroad under local laws could be registered with the British government, provided a British consular official personally witnessed the marriage.
Lesbian, gay, bisexual, and transgender (LGBT) persons in the British Overseas Territory of Akrotiri and Dhekelia enjoy most of the same rights as non-LGBT people.
Same-sex marriage has been legal in the Pitcairn Islands since 14 May 2015. An ordinance to permit same-sex marriages was passed unanimously by the Island Council on 1 April 2015, and received royal assent by Governor Jonathan Sinclair on 5 May.
Lesbian, gay, bisexual, and transgender (LGBT) people in the British Overseas Territory of the Pitcairn Islands enjoy most of the same rights as non-LGBT people. Same-sex sexual activity is legal, discrimination based on sexual orientation is constitutionally outlawed and same-sex marriage has been legal since 14 May 2015.
Among the fourteen British Overseas Territories, eight – Akrotiri and Dhekelia, the British Antarctic Territory, the British Indian Ocean Territory, the Falkland Islands, Gibraltar, the Pitcairn Islands, Saint Helena, Ascension and Tristan da Cunha, and South Georgia and the South Sandwich Islands – recognise and perform same-sex marriages. In the Sovereign Base Areas of Akrotiri and Dhekelia, only British military and civilian personnel can enter into same-sex marriages and civil partnerships.
British Forces British Indian Ocean Territories (BFBIOT) is the name for the British Armed Forces Permanent Joint Operating Base (PJOB) on Diego Garcia, in the British Indian Ocean Territory. While the naval and airbase facilities on Diego Garcia are leased to the United States as Naval Support Facility Diego Garcia, in practice, the base operates as a joint UK-US base, with the United Kingdom retaining full and continual access.
Same-sex marriage has been legal in Akrotiri and Dhekelia since 3 June 2014. An Order in Council to legalise same-sex marriages was approved by the Privy Council of the United Kingdom on 28 April 2014 and came into effect on 3 June. However, this only applies if one of the parties to the marriage is a member of the British Armed Forces. The order does not apply to the local civil population residing in Akrotiri and Dhekelia. Military personnel have also been able to enter into civil partnerships since 2005.
Same-sex marriage has been legal in the British Antarctic Territory since 13 October 2016. A new marriage ordinance bringing territorial legislation in line with the law in force in England and Wales was proclaimed by Commissioner Peter Hayes on 13 October, legalising marriage by same-sex couples.
Same-sex marriage has been legal in the Falkland Islands since 29 April 2017. A law to permit same-sex couples to marry passed the Legislative Assembly by 7 votes to 1 on 30 March, and was given royal assent by Governor Colin Roberts on 13 April. The territory also recognises civil partnerships, which are open to both same-sex and different-sex couples.
Same-sex marriage has been legal in South Georgia and the South Sandwich Islands since 13 March 2014, in accordance with the law in force in England and Wales, although the Foreign and Commonwealth Office only updated its travel advice website page to include a note about it in January 2018. South Georgia and the South Sandwich Islands, despite having no permanent population, was the first British Overseas Territory to recognise same-sex marriage.
Same-sex marriage is currently not recognised in the Cayman Islands. The island's statutory law limits marriage to different-sex couples. A lawsuit with the Grand Court successfully challenged this ban in March 2019; however, the Court of Appeal overturned the ruling in November 2019. Same-sex civil partnerships are legal following the enactment of the Civil Partnership Law, 2020 on 4 September 2020.
LGBTQportal 
