The Equality Act 2010 has never applied in Northern Ireland so now we wait and see what happens for women's rights here:
https://www.itv.com/news/utv/2025-04-16/really-disappointed-trans-people-react-to-supreme-court-ruling
"Bev Jackson, from the LGB Alliance, has said she wants to help campaigners who are advocating for a similar judgement in Northern Ireland.She said: "Other countries are lookingto us and I hope that we will be able to help our gay and lesbian brothers and sisters in Northern Ireland to achieve a similar position.""
The Irish News
https://www.irishnews.com/news/northern-ireland/ni-campaigners-voice-concern-and-delight-over-supreme-court-gender-ruling-3RCLDW4BM5FM7EQ7GEGEXLXYHU/
https://archive.ph/lunfu
"CAMPAIGNERS in Northern Ireland have reacted with both concern and delight after the UK’s highest court ruled that the definition of a woman refers to biological sex. The impacted legislation, the Equality Act, does not extend to Northern Ireland but Stormont’s Department of Finance has said it “will consider the implications of the ruling by the Supreme Court in terms of gender recognition”.
Belfast Telegraph
https://www.belfasttelegraph.co.uk/news/politics/ni-political-parties-react-to-uk-supreme-court-ruling-on-definition-of-woman-as-lgbt-group-warns-of-concern/a1160661687.html
https://archive.ph/LOoJc
""The Ulster Unionist Party’s Justice spokesperson Doug Beattie said the ruling “has major implications for the application of the Equality legislation in Northern Ireland” which he said affirmed that “transgender women are not women.”
“The Supreme Court has, unanimously, ruled that a woman is an adult biological female and identified as the sex at birth,” he said.
"Those from the transgender community exist and this ruling does not take away their rights as a protected group, but it does make it clear that they are transgender not women."
He also said the ruling “could affect the present Prison Service ‘Guidelines on the Care and Management of Transgender Prisoners’ and called for it the matter to be “addressed urgently.”
“It is important that the Equality Commission advise the Executive on this issue at pace and with a sense of urgency.
“This ruling has a direct impact on the Sex Discrimination (Northern Ireland) Order 1976, the Equality Act (Sexual Orientation) Regulation (Northern Ireland) 2006 and the Gender Recognition Act 2004. For Northern Ireland to remain an outlier on this issue would be unthinkable.”