Well we only have Wiggle/UK cycling events to thank for that. They blatantly ran an event in March sometime without seeking permission from the landowners nor FoTH. They seemed to treat the area as some sort of trail centre.
The signs were put up in open view of private drives and public footpaths and they were not taken down. This was the catalyst for the closing off of certain trails around the area. Don’t blame JMcA really.
I would imagine in reality, it’s nothing to do with that at all & everything to do with ‘illegal’ trails on private land & his endless chasing them down, as he simply doesn’t want riders on his land. It’s been happening for years & is an endless game of cat & mouse, not really helped by industrial scale trail building rather than the more subtle stuff that could be easily missed
The above events from my understanding, are all on bridleways with proper ROW access (hence why they are allowed to run them!), so if you’ve seen signs placed where they shouldn’t be, it’s a big likelyhood they have been moved.