Trans women should use toilets according to their biological sex, the equalities minister has said.
In response to the UK Supreme Court's ruling that a woman is legally defined by biological sex, Bridget Phillipson stopped short of saying trans women should use the men's toilets.
But she told BBC Radio 4's Today programme: "The ruling was clear that provisions and services should be accessed on the basis of biological sex."
Pushed further for clarification on whether a trans woman should use the men's or women's toilets she repeated: "The ruling is clear."
Phillipson said the law on trans women accessing single-sex spaces on the basis of biological sex "would apply right across the board".
But she stressed that the Equality and Human Rights Commission (EHRC) "will be setting out additional guidance and a statutory code of practice, because we need to make sure that everyone has the ability to access services that are safe and appropriate, and respect their privacy and dignity".
In particular, there needed to be "appropriate and available services for all people, including trans people" when it came to settings such as hospitals and changing rooms.
Pressed on what the ruling meant for trans women looking to use a toilet today, she responded: "The ruling was clear that provisions and services should be accessed on the basis of biological sex.
"But I know that many businesses large and small will ensure that they have appropriate provision in place, for example many businesses have moved towards unisex provision or separate cubicles that can be used by anyone."
The EHRC has already suggested trans people should use their "powers of advocacy" to campaign for so-called third spaces that are gender neutral to avoid these sorts of dilemmas.
Phillipson, who is also education secretary, said many places had unisex toilets or individual cubicles.
"Go into your local cafe, a local family cafe - [the] chances are that they'll have one cubicle that's self-contained that can be used by anyone," she added.
Campaign group For Women Scotland, which brought the case, warned that interpreting "sex" as gender identity under the law would have implications for the running of single-sex spaces and services, such as hospital wards, prisons, refuges and support groups.
The decision by the Supreme Court found the biological interpretation of sex was required for single-sex spaces - which can include changing rooms, hostels and medical services - to "function coherently".
However, single-sex spaces could exclude people with gender recognition certificates (GRCs) - which give legal status to a transgender person's gender identity - "if it is proportionate to do so", the judges ruled.
Transgender people have said the ruling may erode the protections they have against discrimination in their reassigned gender - protections the judges said they had under other parts of the Equality Act.
Phillipson, who managed a women's refuge before becoming an MP, said it was important that "women – especially those who have experienced male violence, sexual violence and trauma – are able to access safe, therapeutic spaces" while ensuring that "everyone in our society is treated with dignity and respect".
She said these women-only spaces could now be "confident as to how they deliver services" as the Supreme Court had "set that beyond doubt".
Prime Minister Sir Keir Starmer has also welcomed the ruling, telling ITV West Country: "A woman is an adult female, and the court has made that absolutely clear."
He said the ruling "gives real clarity" and would inform guidance.
"It's a welcome step forward. It's real clarity in an area where we did need clarity, I'm pleased it's come about."
