I love this website!!!
Based on the initial respones I got to my posting I thought the only thing left to do was attempt to get run over by an A320 the next time I visit Heathrow as I had clearly committed the most awful crime in wasting precious pilot's time with such a stupid question. But now I feel somewhat vlilified and would like to thank those who have offered some support.
I have learned one thing if nothing else throught this process - that there is a "Spectators" forum for posting such items - I hadn't appreciated this was the case.
I just hope those of you genuine pilots with absolutely no tolerence for people who make genuine mistakes don't ever fly me on mone of my regular trips to ORD / LAX as I suspect you are the most dangerous people in the sky.