Hi guys,
Yes as i understand things, you don't HAVE to be in posession of them while on your shoot, in order to shoot the birds mentioned within the individual licenses named. But I would say that it wouldn't be a bad thing if you had them in your posession, say, either in your shooting files, or on your pc system, if for no better reason than that you can then prove (if the need should arrise) that you are acting leagally where you have shooting permission. I would even go so far as to say that it may well help your game if you did have them to hand, like.
I was in a situation on one