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Former Barnet Council leader arrested, replaced as Reform UK chief

Dan Thomas was arrested on suspicion of assault and controlling behaviour by Gwent Police.

Reporting desk London Crime News Desk||3 min read|London Crime News
Dan ThomasIncident → evidence → outcome
Dan ThomasSenedd Cymru / Welsh Parliament via Wikimedia Commons (CC BY 4.0)

Dan Thomas, formerly the leader of Barnet Council, has been replaced as the head of Reform UK in Wales. This change follows his arrest on suspicion of assault and controlling behaviour by Gwent Police on September 13th. Thomas, who served as Barnet Council leader between 2019 and 2022, denies all allegations and has been released on bail while enquiries continue.

Reform UK response

Reform UK leader Nigel Farage MP commented on Thomas's departure from the Welsh leadership role, calling it a "bump in the road" caused by "personal difficulties". Farage had previously appointed Thomas to the position in February, citing his "battle-hardened experience of running big budgets" from his time leading Barnet Council. Following the arrest, Farage stated it was "pretty much untenable" for Thomas to continue in his leadership role, although he has not been removed from the Welsh parliament.

Background in Barnet

Thomas was a Conservative councillor for Finchley Church End ward from 2006 until he defected to Reform UK in June 2025, formally resigning from Barnet Council in December of that year. His departure from the local authority was met with criticism from Conservative members. The party he joined failed to secure any seats on Barnet Council in the May local elections.

In a statement released after his arrest, Thomas said he had "done nothing wrong" and did not want the "coming headlines to be a distraction from the fantastic work our Senedd team is doing in holding this government to account."

Reader briefing

Questions this report answers

Q/A
01Why has Dan Thomas been replaced as head of Reform UK in Wales?

Dan Thomas was replaced following his arrest on suspicion of assault and controlling behaviour. He denies any wrongdoing, but Reform UK leader Nigel Farage stated it was "pretty much untenable" for him to continue in the leadership role due to "personal difficulties".

02What was Dan Thomas's role in Barnet?

Dan Thomas served as the leader of Barnet Council from 2019 to 2022. He was also a Conservative councillor for Finchley Church End ward from 2006 until he defected to Reform UK and resigned from the council in December 2025.

03What is the current legal status of Dan Thomas?

Dan Thomas was arrested on September 13th on suspicion of assault and controlling behaviour. He denies any wrongdoing and has been bailed pending further enquiries by Gwent Police.

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Dan Thomas replaced as Reform UK Wales chief | London Crime News