I've searched through and not found an answer to my exact question.
I purchased my purpose built maisonette in 2018 - it was built in the early 90's. My combi boiler has the flue straight out behind it but even though it exits my wall, it is technically located in my neighbours garden. I haven't changed the boiler since I moved in. The flat above me has the same positioning (but higher). The new owners of next door are now saying it is illegal for my flue to be there and they're going to start legal action. Where do I stand with this please? Surely it comes under some grandfather rights?!
I purchased my purpose built maisonette in 2018 - it was built in the early 90's. My combi boiler has the flue straight out behind it but even though it exits my wall, it is technically located in my neighbours garden. I haven't changed the boiler since I moved in. The flat above me has the same positioning (but higher). The new owners of next door are now saying it is illegal for my flue to be there and they're going to start legal action. Where do I stand with this please? Surely it comes under some grandfather rights?!