Welcome to the forum
Your fantasy is common enough around here for many members to give advice and positive reinforcement. The last conversation I found in the search is from 2023 and it’s here. While that was for a couple, it’s a case of as a single person either using more adult oriented dating sites where you can mention your interest in golden showers. Or if you are dipping your toe in to test the waters so to speak using a more adult service with someone who’s already experienced. There are clubs that hold events. You just need to investigate, there still seems to be several over England that have periodic events for you to think about unless you are more global!