The EHRC have today written to NHS Fife and the Scottish Health Secretary about the requirement for single-sex facilities for employees. I quote: "We would like to remind you of your obligations under the Equality Act 2010. The Act protects individuals from discrimination and harassment on the basis of a protected characteristic, including sex, religion or belief, and gender reassignment."
https://www.equalityhumanrights.com/media-centre/news/equality-regulator-engages-scottish-government-and-nhs-fife-regarding-staff