Reform Wales Leadership Resignation
Reform Wales Leader Dan Thomas Resigns Following Arrest Over Assault Allegations
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Key Points
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Thomas said Reform Wales had grown from “zero to 34 elected members” under his leadership, becoming “the largest opposition group in Welsh history.”
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Before joining Reform UK, Thomas was leader of Barnet Council in London from 2019 to 2022. He defected from the Conservatives to Reform in summer 2025, resigned as a London councillor later that year and returned to Wales with his family.
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Thomas was absent from the Senedd’s First Minister’s Questions on the day of his resignation; his deputy, Helen Jenner, stood in and challenged the Plaid Cymru first minister over an event involving nationalist leaders from Scotland and Northern Ireland.
Dan Thomas resigned as Reform UK's leader in Wales after being arrested and bailed on suspicion of assault and controlling or coercive behaviour, according to Mirror. The 45-year-old said he was released without charge and insisted he had done nothing wrong. Thomas cited personal reasons for stepping down, saying he wanted to prevent the investigation from distracting Reform's work in the Welsh Parliament, Manchester Evening News reported.
Thomas, appointed by Nigel Farage in February, will remain the MP for Casnewydd Islwyn. Deputy Helen Jenner will stand in for him at First Minister's Questions. His resignation marks another setback for Reform Wales, which faced controversy after its former Welsh leader Nathan Gill was imprisoned for bribery, Politico noted.
From Zero Members to Largest Opposition Group
Thomas transformed Reform Wales into a major political force in just months. Under his leadership, the party grew from "zero to 34 elected members," making it "the largest opposition group in Welsh history," Mirror reported. This dramatic expansion came after he joined Reform from the Conservative Party in summer 2025.
A Political Journey From London to Wales
Before leading Reform Wales, Thomas was a prominent Conservative politician in London. He served as leader of Barnet Council from 2019 to 2022, according to Manchester Evening News. After defecting to Reform UK in summer 2025, he resigned as a London councillor and relocated to Wales with his family to focus on his new role.
Deputy Takes Over Parliamentary Duties
Helen Jenner, Thomas's deputy, stepped into his role immediately. She represented Reform at First Minister's Questions on the day of his resignation, Politico reported. Jenner challenged the Plaid Cymru first minister over an event involving nationalist leaders from Scotland and Northern Ireland.
Mounting Troubles for Reform's Welsh Operations
Thomas's resignation adds to Reform Wales's recent difficulties. His departure comes months after the party's former Welsh leader Nathan Gill was imprisoned on bribery charges. Thomas said he would support the group's choice of a successor, signaling his commitment to the party despite stepping down.
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