t1000 knows the chipenham riding from your door. I'll be out with them next week I expect so see you then. It will probably be a local (or Bath) start as we ventured all the way over to CwmCarn last night.
imo west (more woods but have to link them) is more interesting than east (more downs but more off road)
there is another regularish group from bath on wed nights, analogueandy on here 'organises' it I think their address is bathmtbathotmaildotcom but its been a while since I've seen them about. Its fair to say they usually have a higher pace than us.
If you can't wait then take an OS map into Johns bikes and I'm sure Sean can point out the fun bits.