Thanks.
I got very lucky with light really. There was patchy cloud, and the light got through a gap to just light part of the smoke trail making it look very dramatic. if I was confident with touching photos in photoshops I'm sure I could make it more dramatic... but I'm not.
It's not too dissimilar from a photo I saw of red arrows on here a while back, by you I think. Anyway I just copied the URL's from my website for last lot (was being lazy), here's a better res and quality vesion:
