My magnificent Scots Pine is under attack!

[MattyF]

Any close up pics of the wounds left?

[daveatdave]

look like the lower branch has been cut back on your side of the boundary did you give them permission to clime the tree also it depends on your relationship with your neighbour

in the end its done and not too bad a job by the looks    

[Ian C]

One of the problems is that people plant trees like this on boundary’s, you can’t blame the neighbor, to them it may be a pita , people need to plant trees “in” there garden not on a boundary

[MattyF]

It is unlikely that this species will be colonised by wood decay fungi if the limb is removed, however you could use that in your favour as an negotiating point, that if the tree dies as a result the neighbour could be liable.
 
Also you have the right to disallow access to any part of the tree on your side of the boundary to use as an anchor point.
 
Given the size of the tree out doubt it of sufficient size to meet the TPO assessment criteria.
Another approach is to discuss a reduction on that individual limb rather than just crosscutting it.
 
Best of luck, it's a fine tree and I wonder why on earth the neighbour wishes works as its miles from his dwelling.
I have heard of people using steel nails to deter unwarranted works, not condoning it though but I can see how it's effective when the tree surgeon hears about them.

Any tree can have a TPO placed on it ...also at the base of the two major primary limbs isn’t the greatest place to remove a limb,Scott’s pine like all species if an a large limb removed can be colonised by decay fungi if the final cut is poor.
Seriously though you actually put advice about driving in steel nails and disallowing access to. Make some ones job un safer, harder and encourage bad pruning and bring those serious harm and damage to there equipment ..
[emoji1304]

[arboriculturist]

A tree has to meet a crown area to have a TP0 made on it, and the probability of a coniferous tree of the 'specific species'  being colonised by is infinitesimally low whatever some reference books may have you believe.

The point I made about nails in trees was merely an observation and is not to be condoned as was made clear in the post, perhaps not clearly enough.

The tree will still thrive despite the major limb removal. 

[MattyF]

A tree has to meet a crown area to have a TP0 made on it, and the probability of a coniferous tree of the 'specific species'  being colonised by is infinitesimally low whatever some reference books may have you believe.
The point I made about nails in trees was merely an observation and is not to be condoned as was made clear in the post, perhaps not clearly enough.
The tree will still thrive despite the major limb removal. 

Not what I was told by tree officers or lecturers and that’s not indicated on the governments web site unless you can show me evidence to the contrary.

[arboriculturist]

Apologies, the wording was poor. By size I should have said the Amenity afforded by size when applying the Helliwell system, when a tree is assessed for suitability for making a TPO on it as part of it meeting the 'assessment criteria'.