Toz it was killing me what the hell was causing it. You were bang on from the start TLP was the issue. I had to fight this to see what the problem was it was really bugging me. Without installing TLP I can't reproduce the problem. As soon as I install TLP BAM!!! it starts happening. The only problem is I don't know how to report the bug or is it specific for my hardware......
I did email the PPA owner as there was no option to report a bug on his page. I can live without the extra 2 hours battery life. Going to look into some other power management options.