I'm sure this is not the right place to put this, but it is vaguely legal.
I own a flat in London, I lived it in it for a while and then I let it out and it's been a BTL for about a decade. It's a ground floor in a terrace. The flat above (the original upstairs of the house) has had leaks which have permeated my/the downstairs flat kitchen ceiling about 3 times a year. It is both annoying and damaging
The owner of the upstairs flat lives in it and she is a nightmare neighbour. Abusive and rude, and drags her heels over doing anything about the leak.
Understandably, the tenants are annoyed. They are paying London rent for a substandard experience. And there is seemingly nothing I can do apart from engage in a back and forth with the owner of the flat to rectify the issue.
The tenants now want a rent reduction.
What can I do? Can I sue her?! Take legal action to make her solve it once and for all (easier said than done)? Make her pay my tenants compensation? Or something else?
After 15 years of having her as a neightbour, I'm out of steam....
Thanks in advance!