Are you referring to the land registry title plan?
Unfortunately, the land registry title plans are not ideal in deciphering whether the boundaries are correct. Unless you have the old title deeds which have measurements etc, you will have to rely on any evidence on the ground.
If you have any any evidence of previous fencing this is a good indication.
You may also want to discuss with any neighbours.
Lastly, you should check whether there are any restrictive covenants which prevents you from erecting a fence.
I hope this answers your questions. If so, kindly rate the answer and provide feedback.
If you have any further questions, please do not hesitate to ask.
They should appear on the land registry title information document.
It would be on the official copy entry. If it foes not state anything, you could assume there is none.
I hope this answers your questions. If so, kindly rate the answer.
It does not appear to refer to the election of a fence.
In a nutshell, you cannot erect any buildings.