Reform UK Wales Leader Dan Thomas Steps Down After Arrest

Reform Wales Leadership Changes As Thomas Steps Down

Dan Thomas Is Leaving Reform UK’s Welsh Leadership While Insisting He Has Done Nothing Wrong.

Dan Thomas has stepped down as leader of Reform UK in Wales following his arrest, saying he does not want the situation to distract from the party’s work in the Senedd.

He denies wrongdoing. ITV Cymru Wales reported on 15 September 2026 that he was arrested on suspicion of assault and engaging in controlling or coercive behaviour. Gwent Police said the man concerned had been bailed while further inquiries continued.

Thomas said he had been released without charge. He will remain a Senedd member for Casnewydd Islwyn and says he will support the group’s next leader.

What Police And Thomas Have Said

The police statement reported by ITV concerned the arrest of a 45-year-old man from the Aberbargoed area on Sunday 13 September. It described the suspicions being investigated and confirmed bail pending further inquiries.

Thomas’s statement described the leadership decision as being for personal reasons. He said: “I stress that I have done nothing wrong.”

These statements establish different parts of the position. Police describe an ongoing investigation. Thomas gives his denial and explains his decision to leave the leadership. Neither an arrest nor a resignation establishes that the alleged conduct occurred.

Leaving The Leadership Is Not Leaving The Senedd

The immediate political change is at the head of Reform’s Welsh group. Thomas’s statement does not announce his resignation as a member of the Welsh Parliament.

That distinction matters to constituents and to anyone assessing the parliamentary consequences. A vacancy in a party role should not be described as a vacancy in an elected seat when the member says he will continue to serve.

His departure nevertheless requires the group to make a leadership choice. The new leader will need to represent its position publicly and organise its work while the investigation remains separate.

A Rapid Change For Reform In Wales

Nigel Farage announced Thomas as the party’s Welsh leader in February. The party subsequently became the second-largest force at the May Senedd election, making the leadership change significant well beyond one internal appointment.

Thomas previously led Barnet Council as a Conservative before joining Reform. His move into Welsh politics had placed him at the centre of the party’s effort to turn electoral support into a substantial parliamentary presence.

The wider Welsh political setting is explored in Taylor Tailored’s report on the Cardiff pact and the challenge to Westminster. That constitutional debate is a separate issue from the allegations now under investigation.

What Remains Unresolved

The criminal investigation has no outcome established by the statements reported here. Release without charge at this stage should not be confused with confirmation that an investigation has ended; police have said inquiries are continuing.

Nor should political commentary be allowed to supply a verdict that the evidence does not establish. Scrutiny of the party’s leadership arrangements can proceed while the allegations remain allegations.

The next developments to report are the group’s choice of leader and any formal police update. Thomas has stepped down from the first role while saying he will continue in his elected one.