In reply to the OP,
Yes there are rules (lots) on low flying in the military. Some of them can be found in the public domain now.
http://www.maa.mod.uk/linkedfiles/re...ies/ra2330.pdf
(if you're really bored.)
Reference to the point I think that HKCP was asking about gliding clear etc, that doesn't apply to twin or more engined military aircraft because the requirement is basically to not crash on someone's house if an engine fails.
I've flown through Worcs on a few occasions, there is more interesting flying over the border in Herefordshire. After you've done it a few times it's only a bit more interesting than the M5.
I do like views of the Malverns though. You have to be quite careful flying near them as it can be quite an active paraglider site.
SOL.