Going to have to have the whole tree taken down. There’s virtually nothing of it in our garden now but most of it is hanging over our neighbours. We had another major branch snap off a few years ago when it was laden with apples. TBH, tall apple trees are a pain in the arse - in autumn I’m picking up and chucking away a bucket of apples a day from the lawn. We will probably replace it with something that’s got colour and leaves all year round such as a Eucalyptus. It’s gotten too high anyway - it was tall enough when we moved here in 1990 and we had two of them then. Had one taken down about 20 years ago as it was leaning at an alarming angle. I need to get my ladders out these days just to get some apples from it!