Talgarth has had arguably worse nutcase security than Denbigh for a long time ha. It's also in a much, much worse state structurally thanks to a previous owner removing every single slate from every single roof and selling them for a huge profit!
Beardy Elwyn is long gone from Denbigh, after his dog bit a potential developer on a visit to the site he was basically told to never come back. When the council completed the CPO Denbigh got a proper fence around it for the first time and a very visible official security guard presence complete with cameras and all that gubbins dotted around.