Conservatives say they have written to every Conservative-run council urging implementation of new rules intended to protect single-sex spaces. The move comes after left-wing councils warned they would not comply with guidance linked to the equality watchdog. The underlying dispute centers on whether the new single-sex provisions could restrict or otherwise affect the rights of trans people, with critics arguing the approach may be harmful to trans rights and supporters saying it safeguards single-sex protections. The reports frame the issue as a potential confrontation between local authorities and the equality regulator over how the rules should be applied in practice. In response, Conservative figures are urging councils to follow the new requirements, while opponents signal they plan to challenge or refuse implementation. No additional details about the specific rules, the contents of the letters, or the legal basis for the councils’ positions are provided in the source excerpts. Overall, the story focuses on the political and administrative push to implement the rules and the backlash from councils that say they will resist the regulator’s stance.