I was very impressed with Luton's proposals to investigate this further in another place. This is exactly the co-operation that should exist between pilot's and controllers - well done!
Reading the reports in GASIL it seems to me formal reports only tend to be made when the infringement is blatant?
Notwithstanding the comment by the ATCO that aircraft are vectored to the limit of controlled airspace I find it very difficult to justify how or why the ATCO should apparently have taken such an aggresive line. It seems to me it should have been quite clear to him that the pilot knew exactly what he was doing. I am sure if I "had my eye" on an aircraft that was clearly flying very close to the edge of controlled airspace on a roughly parallel course I would be pretty confident that the pilot was navigating very accurately. (I accept there is always the possibility the pilot might make a completley unexpected turn into controlled airspace.)
Whislt I appreciate controllers do not always have time I have been very impressed at how often I have heard something along the lines "if you continue on your current course (at cuurent height) you will infringe controlled airspace at". That avoids on the whole the problem ever occuring in the first place.
I totally agree with the posting of this thread and I think we will all find the outcome informative.