WorkingHard.... Well said, Sir.
VFR is not 'locked out' there are plenty areas you can fly VFR
According to my book, Class A prohibits VFR. (with the exception of the CTR, etc. - ok)
I agree some pilots could do with better navigation and radio training. The reluctance by some to use radio nav and/or GPS still puzzles me.
However as your airspace is so complex, I think it's rather unfair that VFR is left on its own to navigate themselves around the pile of Class A at 10,000ft:
*Source: SkydemonLight showing airspace of the London area, a product endorsed by NATS. Garmin GPS units would also show similar airspace depictions.
Notes: Each red line depicts a boundary of Class A airspace, where mostly VFR is locked out. Pink line shows route from Shoreham to Cambridge. Pink shaded circles show NOTAMed areas. And I chose 10,000ft because it's more fuel efficient.
... yet cause the most grief when INCAS because they have poor performance i.e. they are in the way for much longer, take longer to vacate levels etc.
I thought that's what lower airways are for? Light and slow aircraft generally cruise at lower altitudes. You won't find B737's cruising at 4000ft.