Martin - in my experience such matters are only resolved between neighbours.
The registered information confirms legal ownership of land/property but the Police don't generally get involved in boundary disputes unless criminal acts have taken place such as assault
If neighbours can't resolve matters then the sole arbiter is a court of law and they can sit in judgement as appropriate. The legal system tries to keep such matters out of the courts and may well recommend a mediation process aimed at trying to resolve matters legally but without tying up the full court's time
There's been no 'TP out of GR214669' since the title itself was created in 1999
If you want to check and confirm what documents are available re each title then please use the
contact form as appropriate. The support team can then check and confirm and explain how to apply by post for copies of anything you may be missing