Leylandi hedge (trees) next door being cut back!

My FiL's next door neighbour has a Leylandii hedge between the back gardens. He agreed to keep it at 7 feet or less, but it's now reached 16 feet.
Considering that the properties are bungalows, this means it takes almost all the light from the bedrooms and back garden.
FiL is in his mid eighties and doesn't want any trouble, so is putting up with it.
He also puts up with the twenty feet tall flagpole belonging to the same neighbour, which in windy weather is unbelievably noisy.
When my DH inherits the bungalow, we're intending to move into it....I fear the neighbour will be in for a shock, there's no way I would be that tolerant of his hedge and flagpole!

We had a very tall Leylandii hedge at the bottom of our very large garden in the UK, with a paddock beyond. Thank goodness for that as the paddock was sold and houses built on it. We took about 2m50 (8') off the top 3 times- ugly stumps for a few months then lovely soft plumes again. The builders actually built on the paddock in relation to the hedge ;)

I had a leylandii 'hedge' which had got out of control so I chopped the tops off leaving trunks of about 7'. All remaining branches were lopped off and I then attached pig wire to the trunks and grow climbing plants up. A very cheap solution ! The leylandii of course doesn't re-grow and it took 15-20 years before most of the trunks/roots rotted away at which point I got someone in to replace the trunks with stakes.

Horrible things, there should be a law against planting them in suburban gardens.

My DD has a running battle with a Leylandii hedge, which in the past has included DH taking clippers to it. Luckily the current neighbours are a bit more reasonable.

The things should be outlawed.

Next-door who runs his own gardening and tree surgery business took out the 15' high laylandi hedge that the previous owners had planted along the length of their border between us and them, the week he moved in. We were rather pleased
I hate the darn things

If Leylandi are kept trimmed, they can be kept in control, but once they are let go, any attempt to cut them back results in an ugly hedge that will never recover. We had a huge hedge at the bottom of our garden that had 20 feet taken off the top, it never recovered. However, I'm not sure that the house that has now been built a few feet from our boundary looks any better.

I do !!! When our neighbours moved 2 years ago they cut theirs down to the ground. Maybe a little too radical because it does mean that we hear a little more car noise.

Always used to amaze me as they had these horrid monsters in their garden and we have one huge oak tree but they hated ours because the leaves fall off