I agree with Rightsraptor that this is merely clarification (reiteration) of existing law.
Any official body pointing out that it is not against the law to provide single sex services is welcome, of course, but my God, how did we get to the point where single wax services are being framed as an abberation, and perceived as negative, in the first place?
tabbycatstripy rightly points out that it is legal to provide single sex services and legal to provide the same services to all.
So we are left with no directive that these services must provide—at the very least—a single sex option.
Many of you will remember our poster in the south of England who cannot get her rape crisis centre to offer even one single session that is single-sex for females, despite there being counselling groups for women and transwomen, and also single sex for males (which would include transwomen).
None of this helps that poster whatsoever. From what I’ve read, despite the guidance, organisations are still being left to decide for themselves, and most will choose to carry on as they were, being “inclusive”.
What needs to happen is a “must” instead of a “can” for provision.