Full Breakdown
Reform UK Wales appoints Helen Jenner as leader after Dan Thomas steps down
By Drooid · · How we work
Core Event
In September 2026, Reform UK’s Welsh group announced a leadership change. Dan Thomas, who had led the party’s Senedd team since February, stood down after being arrested on suspicion of assault and controlling or coercive behaviour. The party swiftly elevated former deputy leader Helen Jenner to the position of Welsh leader.
Background & Context
Reform UK surged in the Welsh Senedd election earlier this year, emerging as the second-largest party and displacing the Conservatives and Labour as the main opposition. The party’s Welsh presence has been turbulent: former leader Nathan Gill was sentenced in 2025 for taking £40 000 in bribes to support Russia, and another Senedd member, Sarah Cooper-Lesadd, defected to Plaid Cymru, prompting internal criticism. Jenner, a fluent Welsh speaker and former deputy leader, had previously served as a candidate for the Brexit Party in 2019 and held a seat for Bangor Conwy Môn.
Timeline
- February – Dan Thomas appointed Reform’s Welsh leader.
- May – Reform becomes the second-largest party in the Senedd following the May elections.
- 13 September – Gwent police report the arrest of a 45-year-old man from Aberbargoed on suspicion of assault and controlling/coercive behaviour.
- Mid-September – Thomas announces his resignation for “personal reasons” and is released without charge.
- Later in September – Helen Jenner is confirmed as the new Welsh leader after a poll of the party’s 33 Senedd members.
Data & Statistics
- Reform holds 34 elected members in the Senedd, making it the largest opposition group.
- The internal poll that selected Jenner was decided by the party’s 33 Senedd members, with Jenner narrowly beating rival Jason O’Connell.
Official Statements & Responses
- He added that the situation was “untenable” for Thomas to continue as leader while domestic disputes were pending.
- Helen Jenner thanked colleagues for their confidence and pledged to build on the work of her predecessors, emphasizing continuity in Reform’s opposition role.
- Dan Thomas issued a statement asserting that he had been released without charge, stressed his innocence, and said he did not want the media attention to distract from the Senedd team’s work. He also affirmed his intention to continue serving his constituents in Casnewydd Islwyn.
Conflicting Reports & Gaps
Police records confirm that a man was arrested on 13 September on suspicion of assault and controlling/coercive behaviour. Thomas’s public statement claims he has done nothing wrong and was released without charge. No further details on the investigation have been released, leaving the factual outcome of the allegations unresolved.
Verbatim Quotes
- “Dan Thomas has been doing a brilliant job,” — Nige
- “I will continue to serve my constituents in Casnewydd Islwyn and will fully back whoever the group selects as its next leader.” — Mr Thomas
What’s Next
Reform UK announced that a new deputy leader for Wales will be elected in the coming weeks. Farage reiterated that the party will continue its parliamentary work while awaiting any further developments in Thomas’s legal case. Jenner’s leadership will be tested as the party seeks to consolidate its Senedd gains and manage internal tensions stemming from recent defections and controversies.