As an aside, going back quite a few years, I was doing long-term cover for my manager and one of the lads rang with a problem.
He had a 2nd line to install in a large new-build (the properties were about 18 months old), but needed access to a JUF4 (Joint-box) in a neighbouring premises garden to be able to 'Push' the new dial tone through.
The JUF4 was covered with rockery and plants that would put Kew Gardens to shame. It really was a sizeable piece of garden art.
The issue was the neighbour would not allow access to, or disturbance of, any aspect of the garden art. I then got a crash-course in basic way-leaves. We have a department who specially deal with these issues, and the feedback I got was that in the occupants deeds, on this type of new-build there is a 'Service Strip' approx. 1mtr wide which is for (you guessed it) ....... the services to be run. Apparently any inspection chambers within this strip should be left exposed for access by the relevant authorities.
Long story short, the neighbour along with a friend of theirs cleared enough of the obstacle for us to gain access to the JUF4. As a goodwill gesture I went up with a bottle of plonk and a box of choccies, and it all ended well.
There are regular occasions whereby new occupants of a premises request line-plant be removed from their curtilage, only to find the way-leaves are there in black & white within their deeds.