Guys, I fixed it.
Click here (http://support.apple.com/kb/DL1455)to download a clean / separate install of iCloud Control Panel 3.0 for Windows.
Go to Windows program manager or what ever its called & completely uninstall your current iCloud Control Panel 3.0 for Windows. This is most likely the one you got bundled with iTunes 11.1 (was in my case).
Restart PC as per the removal process. Upon restarting install the downloaded iCloud Control Panel 3.0 for Windows. Go through the setup & your off & running.
In my scenario I just ticked everything to ensure I didn't accidentally delete any contacts / tasks / calendar items etc that may have been in one place but not another. I ended up having to delete 300+ double / triple / quadruples of contacts in the iCloud contacts within Outlook but now I'm totally sweet.
Good luck all 🙂