chevvron - That's what I was trying to say, I don't see why it's a problem.
Astir
I refer you to the AAIB report (Formal Report 5/2010 published September 2010) on the Tutor/glider midair near Didcot in June 2009 which included a chart of the traffic density near Abingdon on that day. The Brize/Benson gap is one of the busiest pieces of Class G in the country.
Which is precisely why you'd want a bit of protection if you were wanging round on display practice.
And it appears that the said gap is being closed for 3 days.
No, it isn't. It has
some restrictions for a few hours on those days.