Monmouth MP David Davies has been branded a “transphobe” by a prominent Conservative group for his “abhorrent” views on transgender issues.

The Conservative MP dove into a Twitter debate on Saturday over whether transwomen who were born male, should be able to enter female-only elections.

“Somebody possessing a penis & pair of testicles is definitely not a woman. This should be a biological fact not a matter for political debate. At [least we] can agree on something,” said Mr Davies.

The Conservatives LGBT group replied, saying, “David TC Davies’ transphobic views are abhorrent and out of kilter with Conservative Party policy. It’s clear that the T in his name stands for ‘transphobe’. It’s equally clear what the C stands for.”

The MP then said he would report the ’abusive’ comment to Conservative Party chairman, Brandon Lewis.

“My ‘transphobic’ view is that having a penis makes you male. You may disagree but implied use of word a ‘c***’ is abusive & misogynistic,” he said.

“You’re an official Conservative group. We are against social media abuse. I’ll be making official complaint to @BrandonLewis on Monday.”

It comes after the Labour Party confirmed it would allow trans members to apply for positions on all-female shortlists.

“In a discussion about transgender issues I offered the opinion that it is not possible to be a woman if you are in possession of male genitalia," said Mr Davies, in a later statement to the Chronicle. "To my surprise, this seems to be a controversial statement these days with many people angrily saying that you can indeed be a woman if you have a penis. Be that as it may I am entitled to my opinion and I was appalled that a group based in Conservative HQ responded with a joke about my initials 'TC' which they implied stood for ”transphobic c***”. "Only last week the Conservative Party quite rightly spoke out about abuse on social media but it seems some of our own employees are guilty of it. I am writing a strong letter of complaint to the Chairman of the party."