By the way, the circle round Oakhanger is misleading, it only transmits towards geostationary satellites on the equator and according to RAF documents, is only hazardous to some aircraft systems (not to humans) south of an east-west line through the site.
Chevron
There has been much documented information concerning aircraft disappearing without trace when entering this area. Just to correct you its not a circle but a triangle
So beware flying in the area
Pace