Halfords never cease to amaze me. Wheel locking nuts are there so that you can't just take someones wheels off....and yet you can now buy something that will take any wheel nut off.
i have 2 different types of locking nut removal socket, and a few less subtle methods
most garages will have a socket set to remove them they've got reverse thread so you hammer them on a little then using a nut gun on un-do they usually wizz off.
probably wouldnt cost more than a tenner