Sarah Cooper-Lesadd, a Member of the Senedd for Pen-y-bont Bro Morgannwg, was elected for Reform UK in May before switching to Plaid Cymru in September. In an interview with BBC-produced Newyddion S4C, she alleged a sexist and misogynistic culture within Reform UK and said she was 'on the receiving end' of such comments.
She pointed to two separate incidents, claiming a prominent party member told her she 'looked like a screamer' during a political rally. She also alleged the same member said she 'did not need to be elected', though the full comment was not provided.
Reform UK has called her claims 'outright fabrications' and said she should resign. The party's response comes ahead of an ITV undercover investigation due to be broadcast on Sunday evening, which has filmed several of the party's supporters and candidates over a 12-month period, with several making racist and sexist comments.
Reform UK said all those featured in the programme were under investigation, with some having resigned and others suspended.