I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Parking on site is not restricted. Just drive on in. But they are now starting some work on the site so have placed barriers up. at present 02-09-24 you can drive partway in.
park at the marker then walk to which ever is you preferred TAOL spot ( extra info added by @stevesb
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 12/01/2020. It remains the responsibility of any pilot to check for any changes before flying at the same location.
The site appears to be open during working hours M-F, as there are firms working on site. At w/ends paintballers use it, and the gates can get locked when they finish for the day. I almost got locked in a few years ago!
Jay @Proteous we’v had a request from Karl @notveryprettyboy to change the category of this location from Castles and Fortifications, over to the new FPV category.