My stomping grounds, back when I used to actually ride seven days a week as opposed to seven times a year, were the Clent Hills. Think they're National Trust run now and not sure what MTB rider's rights are like. Sure access won't be quite what it was back in the 90's but there are a good few bridleways around and a good variety of riding. Excellent scenery as well - views to the Black Mountains and the Malverns on a good day. (http://www.nationaltrust.org.uk/clenthills/
Seem to remember that weeman was bought up next to Clent as well (hope he won't mind me mentioning that) and as he's been on some retrorides (unlike me, to date) he might have a better idea of their suitability. (And no Chris, I don't think we should start by going up from the Island to Nimmings.
50's Phillips Trike (child's) || 94 Saracan MaxTrax
|| 96 GT Zaskar LE
|| 98 Diamond Back Viper Pro BMX
Wanted: lots of things. But my money has all gone... for now...