Direct Answer
When was same-sex marriage legalised in the UK?
Direct answer
Same-sex marriage was legalised across the UK in stages, with England and Wales, Scotland, and Northern Ireland reaching implementation at different times.
- Status
- reviewed
- Reviewed
- 26 May 2026
- Sources
- 7
- High trust
- 7
Explanation
Marriage equality was not a single UK-wide moment. England and Wales used the Marriage (Same Sex Couples) Act 2013, Scotland used the Marriage and Civil Partnership (Scotland) Act 2014, and Northern Ireland followed through regulations made under section 8 of the Northern Ireland (Executive Formation etc) Act 2019.
Timeline Evidence
Celia Kitzinger and Sue Wilkinson’s Marriage in Canada
In 2003, Celia Kitzinger and Sue Wilkinson married in Canada, where same-sex marriage was legal. Their subsequent campaign to have the marriage recognised in the UK highlighted the stark discrepancies in legal recognition of same-sex relationships between countries.
Equal Marriage Legalised Across the UK
Marriage equality arrived across the UK through staged legal reform. The Marriage (Same Sex Couples) Act 2013 received Royal Assent for England and Wales, Scotland legislated through the Marriage and Civil Partnership (Scotland) Act 2014, and Northern Ireland followed through 2019 regulations that took effect in January 2020.
Same-Sex Marriage Takes Effect in Great Britain
The first same-sex marriages in England and Wales took place on 29 March 2014 under the Marriage (Same Sex Couples) Act 2013. Scotland's separate Marriage and Civil Partnership (Scotland) Act 2014 then brought same-sex marriage into Scottish law later that year.
Same-Sex Marriage Becomes Legal in Northern Ireland
Civil same-sex marriage became lawful in Northern Ireland on 13 January 2020, after regulations made under section 8 of the Northern Ireland (Executive Formation etc) Act 2019 changed the law. The change followed years of campaigning and completed the legal route to civil marriage equality across the UK.
