Thanks, look forward to hearing from you. Dorset is certainly a little far just to go scouting. Though there are some nice places to visit if you fail finding it.
I have a tent but for myself car is good enough. My backseats folds flat and I just about fit diagonally. Its one of the first things I check if I go looking for a new car (some people find it weird lol). Also no need to pay for a campsite (though they are rather cheap)
yeah Mayfield Lavender farm. You used to be able to sneak in but they have ended that! No more sneaking in

They charge you silly money to give you access for sunset, so clearly they don't want people in there for free