Thanks guys.
Done nothing with these other than crop them for now. Acquired Photoshop a couple of weeks ago but not even started to look at how to use it yet (nor do I have the time at the moment).
I really want to get to grips with getting the shots as near OK as I can first and then start to look at PP.
Was treated to Understanding Exposure over the weekend so a bit of bedtime reading to do which should help.
Am currently going out and shooting around 4/500 shots at a couple of games each weekend, practice makes it nearly right I suppose.