Having written this little 'nugget' I thought that it might be worthwhile, to someone, to share it. During a discussion regarding an 'Elfin safety' issue I was reminded of our old Mk1 Allen which we used to have on our small holding when I was a lad. These days you probably wouldn’t be allowed to drive one unless you were at least 18 and had been on an approved course! :)
I hope this helps!!