Firstly, I can't get the photo to load in landscape, sorry!
The property next door is rented. The owner (when she lived there) used to cut back their shrub every year so it was never more than 6/7 ft tall. Since she moved out and rents the house out via a local estate agent the shrub has not been cut in around 5 yrs or so. it is now huge, taller than our two storey house. It is the one on the left at the end of their garden. It's a foot or so away from our fence and puts the whole of the end of our garden in shade, drops catkins and leaves all over our trampoline so it has to be swept and cleaned every time my daughter wants to use it, the roots are starting to warp the fence and come up through our grass making mowing a hazard. They also have very large conifers which again, used to be pruned every year but now they are making it very difficult to take our bins out via the path that runs behind our gardens. The current tenants say they can't cut it down or back as it's too big, it would be a professional job, and I agree. They are now moving out so I have contacted the agent advertising for new tenants asking for the owners details so I can ask them to do something about the now huge tree before the next tenants move in. They have not responded to my request and I haven't heard from the owner. We have cut off what we can reach that is hanging over but it needs ladders/scaffolding to reach the full height. What should we do please?