Right, so I have uninstalled the joystick in device manager under the human interface device. Restarted the computer, plugged the joystick in and when I open the game controller set up it recognises it as the black widow joystick and uses the speedlink driver! So all I can assume that I can uninstall the Microsoft driver but the speedlink one is hidden somewhere and will always overide the Microsoft one when the joystick is plugged in!
So much for always keeping your drivers up to date!