Interesting, I will say if its China, I have been in a long term relationship with a mainlander in the UK as well as being myself bisexual, I can give a good overview of this.
From talking to a lot of asian lgbt+ people with expeirence in both countries, the vast consensus is that it is safer in China; in the UK you are likely to get infrequently people shouting slurs at you as well as at a much, much higher risk of being randomly assaulted on the street for displaying queer.
In terms of revolutionary work though, the UK is tolerant to communists (marx is buried here), netherlands & germany will be more difficult but not impossible.