The 2021 Gender Census report for the UK is up:
And the TL;DR, in case you want the headlines without having to read about everything in detail:
@gendercensus
Singular they – 79.0%
She/her – 30.7%
He/him – 30.6%
{None} – 11.5%
hmm??? Shouldn't "percent" {or "out of 100"} mean that these should sum to 100?
@isobel PS: Sorry for the delay, outside of "big survey is open" time I check the social media things less often!