Guys - I am in the process of getting a 'protector' made that fits right across the tank - cut to shape of course. It is very simular to the film above but you really can hardly see it. I tried to damage a small sample by pushing a key through it / scratching it and trust me this stuff is VERY strong.
Only downside is it's going to be about a month before I can get back out to fit it but I promise that I will post results etc up ASAP.
I think I am correct in saying that it is an American company with a branch here (new to us) the product is called - Airstream Protective Film, web site is -
Airstream UK
They have a FULL S31050 kit listed inc fork protectors, mudgaurd etc. The tank kit they list is just the side pieces which is why we are working on a one piece.
.GNOME.