Enjoy your rant.
You are most fortunate in being a Civilian Gliding Club operating there. Note 1 on the 1/2 mil makes it clear that it is primarily a mil para drop zone. We all know most mil activity stops on a fri afternoon. Your Oxford club must be the only club to have the full protection of a danger area. You are so lucky. All other Glider sites have no such protection.
Also be reminded that the CAA have taken action in the past against self appointed 'police' pilots for unauthorised formation flying and endangering other aircraft by flying too close in an attempt to obtain registrations. You should know better than go gallivanting around the sky collecting reg letters.