I don't mean to spoil all the fun here, but if you look at all the suggestions of how to get around the access problems, solely for BCUK members, and all the faffing around it involves, can you really honestly believe that the land owner (who will certainly have better things to with his time) could be even slightly bothered to do so? Think about it practically - it is IMPOSSIBLE to have 'ID' cards for access. Do you think that the land owner will wait at the gate to check you for ID? Or do you expect him to set up perimeter fencing, and have a thumb-print and retinal scan for entry at the gate?