Plus - uninstalled from Impulse.
Edit: Interestingly enough, if I rename the file from ObjectDock.exe it regains its icon and no longer requires elevation!
Resolved edit: At some stage it got flagged as a program that needed UAC access, removed the registry entry at:
\Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\AppCompatFlags\Layers
and this resolved the issue.
I also removed another similar registry entry somewhere else - didn't remove the problem though they may work in tandem if anyone else ever finds this thread after having the same problem.