I have leylandii's which are my neighbours at the bottom of the garden, mine is not a big garden, about 45ft deep, the trees are about 30ft, they run along 3 neighbouring properties also. We have asked them if we could trim them to a height of about 15ft but alas no. They let us trim our side, that is all. It is a south facing garden,, but one now without much sunlight thanks to the trees. The council require £500 to send a letter and an officer to visit, with no guarantee that the tree height will successfully be lowered. I have no problem paying a smaller sum, but £500, is ridiculous with no guarantees.