However, that leaves me with one major annoyance and that is my ability to just run robocopy.
Well, I've found a fix it seems - I've been looking for a while and there seems to be no single answer that actually works but now I've got something. It's cheating a bit because it's working on the assumption that the user you are running as is an Administrator (you are doing backups so seems reasonable)
Create your robocopy batch file and then create a shortcut to the batch file and goto the properties of the shortcut, select "Advanced" and tick "Run As Administrator".
Now go into gpedit.msc and browse to Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options, you will find at the end of the list of settings in the right hand pane a number of UAC settings, mine are now :
You'll need to reboot after making any changes to the group policy.