Good evening guys, thanks for the rapid response.
I tried a few test prints last night following your advice (Results posted on the link below)
http://umforum.ultimaker.com/index.php?/gallery/album/347-printing-issues-2/
Cura settings as laid out in my original post.
Left hand print is 50% Speed (Set on ultimaker), Hot end 210, feed 100
Middle print is 50% Speed (Set on ultimaker), Hot end 210, feed 120
Right print is 50% Speed (Set on ultimaker), Hot end 210, feed 130
Illuminarti - As you can see there was a definite improvement with speed reduction. I did do a print at 60% speed but results were better working at 50%. Tomorrow I will try dropping the speed even lower. However it does seem to be very extreme to print at such a slow speed. These prints all took 65 minutes each. The fan seems to be working correctly though and minimal layer time is set to 5.
Gr5 - I cant see any obvious problems with the nozzle (See picture link above) but I will order a new one to be on the safe side. The nozzle could be at least part of the problem as the print always has the most issues at the back on the left hand side. This can sometimes be kept to a minimum by increasing the feed rate as you can see.
Will try the water test tomorrow and let you know the results
Big thanks to both of you, I will look forward to reading your response.