OK, sorry for the misleading statement, I was thinking of airways. I edited the first line of my last post.
LHR zone is class A therefore no VFR however good the vis, but special VFR is possible. Most of the Heathrow zone is not "notified" so PPL would require 10k.
I was once in a aircraft at LHR when all IFR traffic was grounded due to ATC computer failure. The captain asked for a special VFR clearance to exit the zone en route to Gurnsey. ATC refused on the grounds that his aircraft weighted more than 5700 kg.
Last edited by Rivet gun; 24th March 2006 at 18:43.