Reform UK is a political party in the United Kingdom. It was co-founded by Nigel Farage and Catherine Blaiklock in 2018 as the Brexit Party, and adopted the name Reform UK in January 2021. Farage has led the party since June 2024.

The party has been described as right-wing populist. Since 2022, it has campaigned on a broader platform that includes pledges to reduce taxation and limit immigration.

Reform UK featured in an ITV undercover investigation reported in the news. The investigation included footage of party candidates and officials making racist and other offensive remarks. The party says it conducts vetting checks on people seeking to stand for election.