well ok, it seems as though my post hasn't got anyone to reply to it. Oh well never mind, perhaps no one really knows about
NATS' DEGs.
Thanks anyway, I am sure someone took the time to read my original post and felt like "What the hell is this sod talking about..."
Hopefully I'll have questions that are less "obscure" in the future when (hopefully again) I have enough £££ to support me own flight training (unless all my Qs find As through searching).
Compliments again to the PPrune staff and ppruners for the high quality of these forums.