What's the rules/etiquette on back garden fences?
I have lived in my house for 8 years and the back garden has a fence all the way down the side I "own" but the other side (which is my neighbours responsibility) just has a row of bushes and trees but no fence. It's quite a long garden - about 100 metres in total.
I've recently had a new neighbour move in and they've just been round to say they'd like to put up a fence and it's going to cost about £4K and will I be able to contribute to the cost. I haven't said yes or no but my inclination is to say no as it's not my boundary and I quite like it just as it is.
What should I do as I don't want to fall out with my new neighbour.