Listening to Mr. Menno speaking with Jenny from Scottish Lesbians about the supreme court case.
The lawyer for the Scottish government apparently argued that the law under question was not a problem for lesbian groups, because lesbians could always just screen out the obvious males in their gatherings, and nobody said they were legally obligated to be attracted to these men.
Obvious point being obvious, this suggestion is absolutely unhelpful for any real purposes.
However, on some level, she was correct. In any given gathering of women/lesbians where men show up uninvited, the women/lesbians are under no obligation to be nice to these men. Nor are they obligated to interact with them at all. Turning their literal backs to the intruder and ignoring him is not illegal.
Now, it would of course be ideal (note the sarcasm) if you could have actual real social gatherings among just women/lesbians, as opposed to essentially political demonstrations with a significant social dimension. But if the Scottish government wins the case, this is something they could do immediately. Especially if the event had security (I fully realise all this has risks, obviously).
Same goes for any female-only or male-only gathering which would be declared illegal by such a verdict. And any jurisdiction where this effectively is already the case.
Of course, this strategy requires there be sufficient numbers of women (or men) willing to publicly support single-sex spaces, and to do so in public gatherings. Unfortunately, I think for example in Finland this is not the case.
So basically, "we have to admit you, but we are not obligated to interact with you, or be nice to you" is presumably the case all over. And that could be used as a tool, at least against individual offenders. And especially together with filmed interactions and social media messaging, this could also just be a straight up protest action.