A sign has appeared on a women’s toilet door in the House of Commons in recent weeks, labelling the facilities “inclusive”.
The original lettering that read “ladies” has been taped over and a new sign has been placed above it, signalling that people of all genders can use the toilets.
It features the silhouette of of a male, female as well as a gender-neutral one.
MPs have complained that they were not told about the changes before they were put in place by maintenance over the summer recess.
The change is not believed to be part of a plan to change all of the toilets in the Commons to gender neutral and the sign has been removed while enquiries are made into how it had been installed without approval.
A spokesman for the Commons has since said that they are “currently looking into the matter”.
A spokesman for the Commons has since said that they are “currently looking into the matter”. Stefan Rousseau
Speaking to Mail Online a senior MP said: “It is concerning that this seems to have been done without consultation with any women.
“And, as usual, women are just expected to make way when the men’s facilities retain their original door sign.”
The Mail Online also understands a number of female MPs from different parties intend on writing to Speaker Lindsay Hoyle if the sign was authorised.
Earlier this week, Penny Mordaunt told GB News there is "too much b******s" in the debate about trans rights as she explained why "everyone gets their knickers in a twist" about it.
Dan Wootton in conversation with Penny Mordaunt GB News
Criticism of her for being too “woke” on issues such as trans rights, she predicted, was doomed to fail.
Appearing on GB News' Dan Wootton Tonight, she spoke frankly about it.
GB News' Dan said: "When it comes to the difficult issues like women's sport, like safe spaces for females, toilets, changing rooms, hospital wards...that actually a trans woman isn't a woman?"
Ms Mordaunt replied: "So, look, let's address this issue.
"I said this in the campaign. I said it before the campaign. I am biologically a woman, I know the difference between a man and a woman.
"I can't believe we've had these debates during this contest. There's been far too much b******s, in every sense of the word, discussed.
"Quite frankly I understand this because, as you alluded to, I train against men. I understand the biological differences.
"Which is why, when I held the equalities brief, I raised the issue about sport years ago.
"It's why I've always said we need to look at the science in this, we need to listen to the sporting bodies. They need to have the confidence to make the right decisions."
Ms Mordaunt then went on to explain why the issue is complex, calling for more respectful discourse. GB News
Ms Mordaunt then went on to explain why the issue is complex, calling for more respectful discourse.
She added: "But, and this is why everyone gets their knickers in a twist, because there are some people who were born – for example – men who, legally, are recognised as women.
"When we're writing law, that is clearly a very important factor.
"Trans women aren't biological women – like me – but they deserve respect, they deserve kindness, and I will always take that approach in my politics."