We’ve tried the usual of calling police (three times), inviting them over to hear how loud it is (they agreed that it was very loud), asking to at least reduce the bass, blasting our own music (not sustainable) and so on. Sometimes it works for a day but inevitably it’s back to the usual.
Hoping for some petty revenge ideas to complement the other efforts.
Again, the police in the UK and most of Europe are far better trained than those in the US. There aren’t going to have a baton out waiting for someone to open a door.
i challenge you to find some reports of UK police killing people on routine callouts unprovoked. Then compare that to the what seems like a weekly occurrence of such incidents in the US and control for the population difference.
Here’s a list of all police killings in the U.K. to help: https://en.m.wikipedia.org/wiki/List_of_killings_by_law_enforcement_officers_in_the_United_Kingdom
There is little to no chance a person would be killed or even injured by the police calling to their house over a noise complaint in the UK. It just doesn’t happen. You simply can not presume that America’s dysfunction is replicated everywhere.