Good point
FFF - but g-747 its worth bearing in mind that if you cross the next FIR boundary from UK into France then you are back on the semi-circular rule and (for some reason I don't understand) ATC there
expect you to be on a "VFR semi-circular" level and will tell you off if you report otherwise!
Personally, I feel a bit safer if +/- 100' or 200' from these levels.. but then again, it seems everyone else thinks so too! Ultimately of course, under VFR, we have to see and avoid!!!
Andy
