Thanks all for your replies.
As suggested i have emailed the local Forestry Commision and they have said that licenses can not be granted because they have their own Forestry Staff who manage the animal population.
The chap went on to say that without a license you would be breaking the law.
I agree with those comments made by several of you on this thread "its legal until you get caught".
He also suggested contacting local farmers for permission. Is it best to write to them or just drive up to their farm?
Cheers again
Craig