Another woodland site for consideration (convenient for two organisers!)
Not huge but looks like F&O Matlock/Fearful Silence sort of size.
They seem to have a downed plane which has potential to build a scenario around?
http://www.eastmidlandsairsoft.co.uk/gallery/booking2.jpg
http://www.eastmidlandsairsoft.co.uk/members.htm
Looks like good facilities. A downed plane and an AFV? Could be worked into something. Quite happy to pop down at some point, it's not far to go.
When I want your opinion - I'll tell you what it is!
East Midlands?! Solihull, couldn't get more West Midlands than Solihull.
Aaanyway, literally minutes down the road from me, so easy to check out.
It looks like a paintball site that's also use for airsoft.
S
You could be right about the paintball site going by the facilities.
Ah, and it is: http://birmingham.paintballgames.co.uk/paintball-beechwood-centre
Players won't like that very much. Ah well.
Never heard of Delta Force paintball! Pity that the site would be covered in paint. 
When I want your opinion - I'll tell you what it is!