Same-sex marriage in the United Kingdom
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.
Source: Wikipedia — Same-sex marriage in the United Kingdom (CC BY-SA 4.0)