So update:
Spoke with the landscaper tenant last night. Seems a good bloke and once I’d explained I was a bit surprised by it all it was all very friendly.
He agrees that cutting trees down should be a last resort and suggested that most of the issues with the garage are down to a historic lack of maintenance and the fact the gutters were until recently all just pouring down into the ground at that corner. So it could not actually be caused by the roots (although the guttering issues may have been caused by the same tree).
Anyway, they’re going to prune it back hard and trim another tree that encroaching towards their fence too (but still on our land). Needed doing anyway and £150 to sort that out and keep the peace seems a good deal to me.
So update:
Spoke with the landscaper tenant last night. Seems a good bloke and once I’d explained I was a bit surprised by it all it was all very friendly.
He agrees that cutting trees down should be a last resort and suggested that most of the issues with the garage are down to a historic lack of maintenance and the fact the gutters were until recently all just pouring down into the ground at that corner. So it could not actually be caused by the roots (although the guttering issues may have been caused by the same tree).
Anyway, they’re going to prune it back hard and trim another tree that encroaching towards their fence too (but still on our land). Needed doing anyway and £150 to sort that out and keep the peace seems a good deal to me.