My next door neighbour has a tree which is growing within 3 feet of my home. The tree is now so tall that the branches are resting on the roof of my bungalow. I have spoken to my insurance company legal department and they have told me to write him a letter asking him to arrange pruning or removal of the tree at his own cost. When I write to him do I tell him he has 7 days to do the work from the date he receives the letter?