Slimslag,
OK, so now you have told us why you think the edges are there.
With all due respect, Roffa has told us
exactly why the edges are where they are; to provide separation between a/c flying on published instrument procedures (SIDs, ILS etc) and a/c outside controlled airspace.
Describe the edges and any corners of the London Surface area so it might be easily understood by somebody in a light aircraft navigating by looking out of the window at the surface. Stupid comes in many varieties.
Sorry, can you rephrase this please? I'm really not sure what you're getting at here.
If navigating around the edges of the CTR/TMA is too difficult (which is the impression I'm picking up from your remark above), then a well orchestrated letter-writing to CAA DAP would I'm sure start the process of expanding Class A airspace to make the boundaries more easy to understand whilst flying in a light a/c navigating by looking out the window.....
