Folks,
In Rotorblades ( and Dick's) defense of what happens in the UK, it is a mismash, but it works, and nobody gives much of a thought to the class of airspace ---- as long as it's not EGLL.
I know of the matter of Heathrow that Dick alludes to ---- No, the aircraft did not have a SVFR clearance ---- maybe the rules said it should ----- but it didn't happen ----- and (unlike here) nobody got their knickers in a twist about it.
A long time ago now, but my favorite clearance ( in B707) going from EGKK ( Gatport Airwick to the great unwashed) to Lasham, was "Maintain 1500, Clear for T/O, call clear of the zone". Being a weekend, no LARS, no Farnborough Radar, just turn left at the M3, down to Camberly, turn right and look for a strip on top of a hill. If it's got helo's all over it, wrong hill. You need the one with the gliders all over it!!
Tootle pip!!