Dan Thomas has resigned as Reform Wales leader after police arrested him over alleged assault and controlling behaviour.
Gwent Police arrested the 45-year-old on Sunday, 13 September, in the Aberbargoed area of Caerphilly. Officers later released him on bail as investigations continue. Thomas said police released him “without charge.” He also denied any wrongdoing.
The Reform UK politician announced his resignation on Monday. He said personal reasons led to his decision. Thomas also wanted to avoid becoming a distraction for the party’s Senedd team.
“I stress that I have done nothing wrong,” he said.
“I do not want the coming headlines to be a distraction from the fantastic work our Senedd team is doing.”
Thomas also reflected on his short but notable time as Reform Wales leader. Nigel Farage appointed him to the role in February. Under his leadership, Reform Wales grew to 34 elected members. The party now stands as the largest opposition group in Welsh history.
Thomas said leading the party had been “the honour of my life.” He also confirmed that he will remain an elected representative for Casnewydd Islwyn.
His resignation comes just months after his move from the Conservatives to Reform UK. Thomas previously led Barnet Council from 2019 to 2022. He later defected to Reform in June 2025. After returning to Wales with his family, he also left his role as a councillor for Finchley Church End.
Thomas did not attend First Minister’s Questions earlier in the day. Still, he said he would support whoever the Reform group chooses as its next leader.
Dan previously told a conference that he was “born and raised” in the Welsh Valleys. He later moved to London to build a career in financial services.
