I agree Brian, the Leylandii is the plague of many people and the laws regarding them is never properly implemented. We lived with two monsters at the bottom of our garden that adjoins with a neighbours property, it was always me who had to ask them to do something to restrict their vigorous growth and it was always me who had to do the actual job due to his laziness. Over the years I had a greenhouse that was totally unusable due to these trees overshadowing it and I had no choice but to get shot of it. The cycle went on for years with me asking him to cut some off the height and him saying “OK, but don’t take much off”. The trunks became so massive that they were pushing my fence panels over and the branch growth extended about 5 feet over my boundary and I had no option but to cut back this growth which of course left me looking at the dead brown branches inside of the tree as nothing grows back other than the outer canopy of this type of tree.
Imagine my joy when one day I was at the bottom of my garden and a head popped over the fence and said “Hello, I’m your new neighbour, would you mind very much if I cut these two trees down as they are shading my garden?” I was ecstatic, I immediately offered to lend him my chainsaw and to help him with the job. I ran into the house clicking my heals and phoned a local hire shop to organise a chainsaw because I didn’t really own one of my own, but I did not want anything to stand in his way so hiring one myself was a small consideration. I took the bull by the horns and told him that as the weather was quite nice and he was at work the next day that I would make a start on the job, by the time he arrived home again from his work he had two huge Leylandii stacked up in log piles in his garden.
Now days there are laws that would have prevented this problem, but they are still rather vague and can be difficult to get them enforced. It should be the duty of any local council who receive a complaint about such trees to issue the property owner with an order to remove it within a specified time otherwise they will carry out the work themselves and invoice the properties owners.