Riding on camp during daytime (other than the BW above the reservoir) is a bit daft, as it just gives the antis more ammo.
The halfpipe IMO is OK at night when there's very little chance of conflict, it's also not at risk of any real erosion damage because of it's form and function. However, riding on any ridges or worse across ridges is v bad as it cuts water paths that can aggravate the erosion.
Beyond camp I have no idea which trails are legal or otherwise, I just ride them all 
Bromsberrow Estate paths are all footpaths, BUT you can apply for permission to ride horses on the estate, but Ive never tried applying to ride a bike. I have ridden the estate tracks during the daytime recently but was quite self concious especially as my route goes past a lot of the pheasant pens (and my mum knows the game keeper) so I prefer to ride it at night when, again, other users arent out and there's no risk of meeting a paid gun day shoot and really pissing some people off uneccessarily. And all the owls make you ride faster....
Last night I came down off the landrover tracks (filthy) past the Yew Tree which was fun. That's a cheeky and amusing in the wet and dark.
And HRH Cheeky is strictly only after dark or 10pm which ever comes first. Too much chance of meeting a grumpy dog walker otherwise.
