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To provide better scope for relevant comment, I would add the following info to flesh out the picture. The trees are at least 50 years old and because the whole area is a north facing steep slope, the tops of the trees are/were below 45 degrees angle and at least 10m from the lowest facing window. Thus no light obstruction can reasonably be argued. Conversely, at this time of year we (further north again and down the hill) would see the sun whenever it is out were it not for the house the people in question live in. Being toads, it has not occurred to us to send out a bulldozer in their direction. Incidentally, there is in law no established right to a view, but there is legislation which in some way restricts the cutting down of trees (I don't know the details and I think fast growing conifers, which these are not, may not be in the same category and nor are hedges). The issue of trespass and unlawful act in this case is sort of acknowledged - "but we didn't know" (the council, we have been in verbal touch with the individuals most directly involved), which seems rather lame since we bought the land from them. The couple (wife, actually) are/is very persistent and has successfully "pulled the wool" in this case, ultimately at the council's and rate/tax-payers' expense once the thing is sorted.