Euro,
Where in sarf lunnun are you? do you have transport for your bike or do you intend to ridee it to and from a lane session?
Cos there are trails in Kent (pilgrims way) Surrey or The Chilterns (icknild way/ridgeway) only a spit from J6 M40.
Decide where you want to go then look at a good OS map or talk to the council for approved lanes in the area you choose.