Reform’s popularity has peaked at least for now. It underpeformed in the council elections and also in the devolved parliaments relative to what they would have hoped for. . See the debunk here by @Jord64
https://ddebunked.org/d/3962-debunk-englands-local-election-results-show-shift-towards-multi-party-vote-spread-reform-underperformed-significantly-compared-to-last-year
Electoral calculus has it at a 14% chance of a Reform majoriy and 36% chance of the largest party if held today.
https://www.electoralcalculus.co.uk/prediction_main.html
If Reform UK did get lots of seasts, enough for a majority it would likely have all the problems a large party gets of many different factions with different ideas of where to go. And if it is a minority government then it depends on its partner to pass votes .Either way - it’s coalesced around protests due to the econmic issues with Labour not keeping its election promises and issues around immigration.
You have legal protection including gay marriage.
As an example, the former Scottish Conservative Party leader Ruth Davidson was the first openly gay leader of a UK political party when elected leader in 2011.
https://en.wikipedia.org/wiki/Ruth_Davidson
She is engaged to her partner Jen Wilson but not yet married and they have a child via IVF.
If this is about the current Labour leadership issue, then they are not at all likely to go to an early general election with such a huge majority.
Instead it’s about Kier Starmer continuing or resigning. If he resigns then he’d be replaced by another leader of the Labour party and the reason to do that would be to increase the confidence of the people and re-election chances and in the hope that a new leader is better able to carry out their election promises.
Any prime minister can be forced out by a vote of no confidence which would normally trigger a leadership contest or a general election if no party can form a government. https://commonslibrary.parliament.uk/votes-of-no-confidence/
In this case even a vote of no confidence would jsut mean a new leader for Labour.