Earlier I googled farms near me and one popped up within a 3 minute walk. So off I went letter of permission borrowed from davyt. So off i went I found someone who pointed me in the direction of the farm house I knocked the door explained who I was the lady owner seemed a bit off at the start, I mentioned it was free of charge and that I'd be only using an air rifle that cheered her up so then invited me in dug out a map showed me the area that they owned, I convinced her to show me so we went out in the land rover and she showed me the acres they own there at least 4 barns various sheds fee