It only applies to the small percentage of trans people with GRCs. Nothing has changed for the great majority without GRCs. Also, the ruling does not create an obligation to exclude:
Lord Sumption has warned the Supreme Court’s landmark ruling this week is being misinterpreted
www.independent.co.uk
Thanks for the explanation.
That is true to a certain extent, Previously non-holders of GRCs could be excluded from single sex spaces., although in practice they weren't, whereas holders of GRC could not be excluded.
Exclusion of transpeople can now be effected against GRC holders and non-holders, alike.
And the decision places no obligation on service providers to exclude transpeople from single sex spaces. The decision allows for it, but makes no obligation on enacting that exclusion.
Lord Sumption argued that while many have taken the ruling to mean that service providers are obliged to provide single-sex spaces based on biological sex, the ruling meant that excluding transgender people from single-sex spaces was allowed, and not a breach of the 2010 Equality Act.
So some specific cases that have been highlighted in the media, the ruling may have no effect. E'g the nurse that wanted a transperson excluded from the locker room may not be affected. If the 'changing area' was deemed to be sufficiently private, the storage of clothing and other personal effects may be sufficient in a mixed sex environment.
Similarly, if the government chooses not apply the decision to women's prisons, in connection with transwomen, they are not obliged to.
If they did not accommodate transwomen with cis women in the same 'cells', and there was sufficient privacy in showers, toilets, etc, the government could continue as current. The possession of a GRC makes no difference.
As explained by some butch lesbians, it opens up the probability of them being challenged when using single sex spaces.
In addition, it forces transmen to use female single sex spaces.