Yes, I think the rough timeline is:
Some small groups of older male transsexuals (who originally wanted nothing to do with gay men or their rights) were working away behind the scenes to advance their aims from the 1990s.
They achieved the GRA in 2004, interestingly one of the main functions was to allow gay marriage to a limited group of homosexuals. So did the original anti gay transsexuals adopt a gay ‘benefit’ stance early on? (Obviously not a gay rights stance as not all gay men and lesbians would benefit)
Then in 2015 Stonewall saw a new ‘cause’ to fill its coffers champion.
The extensive Stonewall boosted government lobbying produced Teresa May’s intentions for self id.
Then Stonewalls indoctrination of schools and businesses in the ideology and lies about the law (while simultaneously campaigning to change the law they claimed already supported their position on self id) and hey presto we end up in the hot mess we currently find ourselves.
So this has been rumbling on for years, even back to the 70s but it was turbo charged by Stonewall about 10/11 years ago. It’s interesting to think that such a small group of men (as it was then) had such power, they could get a whole new law, not to right some terrible injustice, or prevent some terrible thing happening, but because they wanted to force everyone to pretend they had become women.