And to follow on from Barney's observations:
The GASIL article talks about SVFR through LCY. How often does this happen (question for AlanM maybe?) I thought most transits through that zone were VFR. SVFR, I thought, was mainly used to get through the LHR zone (where VFR is not allowed, because it's Class A).
So how (if at all) are the comments in that article different from what would be expected on a VFR clearance?
FFF
-------------