I spent 4 days in North Yorkshire on the bike 2 years ago and rode from Scarborough down to Wisbeach on the way home to visit friends and I know what you mean about the farm vehicles, never seen anything so big with huge trailers on the back, and yes very flat. I live in Chipping Sodbury so we have the Cotwolds and Mendips on our doorstep and we also spend a lot of time in the Brecon Beacons which is only 40 minutes away.