Thanks all for the feedback. I spoke to the council tree specialist today and he said they could not do anything as its a private property. Peckhampam, was your's a council property or private? I was told I could prune any overhanging branches but as per law would have to offer them to the owner - who can accept or not. If not, I am responsible for disposing of them. Got to love that law. As to the greater problem, I was advised I would need to address this with the owner of the property who could agree or not to take down the tree. If they don't agree, I would need to look to my insurance company to file a law suit against them which could take years. I am now siding with DulwichFox's experience!