Dan Thomas

Dan Thomas is a British politician serving as a Member of the Senedd for Casnewydd Islwyn and as the Leader of the Opposition in Wales since 2026. Previously a Conservative councillor, he served on the Barnet London Borough Council from 2006 to 2025, including a tenure as council leader from 2019 to 2022. Thomas defected to Reform UK in 2025, citing a commitment to defending British culture and values. He has a background in financial services and retail banking, and he returned to his native Wales to pursue his political career.