My neighbour smokes in his bathroom although there is extraction it only works on condensation so not as a smoke extractor, so the smoke is getting into the cavity and through my extractor into my bathroom and kitchen, and from there into all other rooms in my home.
I hate the smell and see it has an hazard to my health, you know the anti smoking law's I expected my landlord to jump on this problem to solve it but they have not.
This problem is solved by replacing the fan with a proper extraction fan with a piece of tubing behind the fan to the outside wall, stopping smoke from getting into the cavity.
The problem should not be what it cost's to fix, it's an health hazard to me.
Don't bother replying to this, I'm going to seek advice from a local solicitor, I think I've wasted my time and money not talking to a UK legal adviser.