I just asked AI a very similar question:
“Polling on this has shifted, and different surveys show somewhat different pictures depending on timing and question wording.
Before the UK Supreme Court ruling (April 2025): Some 2024 YouGov polling found women, on balance, supported trans women’s access to toilets (45%-34%) and changing rooms (40%-37%), with women’s support consistently higher than men’s by about thirteen points on average.
(my note - not when they’re asked about men who haven’t had gender reassignment surgery - the proportion unhappy with them using women’s spaces is much higher, happy to get these figures if needed because they’ve been the plurality or majority position since 2018)
After the ruling: The Supreme Court’s April 2025 decision that “woman” under the Equality Act means biological sex marked a turning point. Over half of voters (59%) agreed with that ruling compared with just 17% who disagreed, a pattern consistent across age groups . Following this, resistance to trans women’s access rose to 55% opposed on toilets and 58% opposed on changing rooms among Britons overall , and 55% said allowing trans women into women’s spaces poses a genuine risk of harm to women .
More recent 2026 polling: A March 2026 poll found support for trans people using facilities matching their gender identity had dropped further, to just 20-21% for toilets and 18-19% for changing rooms/showers — notably lower than pre-ruling figures. That same survey found this preference for single-sex spaces held across ages and political affiliations, including among Labour and Green voters and 18-24 year-olds, with women valuing single-sex provision even more than men do”