Thanks for the comments guys. I did like the sky and atmosphere in the first one, but the foreground was way too dark. I only changed the seed value by a few numbers and it opened it up a little.
I did change the leaf colour and tint for the eucalyptus and have started re-rendering, I also noticed that all the objects were set to lowest quality, so I was suprised by the outcome.
We'll see tonight when I get home hopefully

(This ones's a little bigger with hight quality values)
Iain
domdib - the terrain is all TG2