‘inclusion of males in female spaces that should be done on a 'case-by-case' basis per individual person.’
What do they mean by this? ‘Case-by-case’ or all at once, the outcome is the same. For a space to legitimately be using the exception, it must use it for everyone who has that characteristic.
So if you choose to exclude everyone over the age of 24 from a service (and you can), the only test is whether the person is actually any older than 23 years 364 days old.
If you choose to exclude all females from a service, including legal ‘males’ who have acquired that status through successful application for a GRC (and you can), then the only test is whether the person you are excluding is a female.
The case you make that such an exclusion is proportionate and in pursuit of a legitimate aim could be made once, or every time. The outcome is the same.
What does case-by-case give you that a blanket rule doesn’t?