Thank you once again for those who posted.
332,

I have been on Ppprune in one guise or another for over six years now but it never ceases to amaze me some of the responses people recieve.
I can assure you I have had three jump seat rides in the North Sea, why on earth would I say I had if I hadnt!

its clearly about who you know and I have a very good friend who flies 'them'. Its never been a problem.
On a serious note, thanks for the replies guys, they look like great fun and I will continue to research this area and hope to get some solid pointers.