Ran into a problem when I came to do the tie bar bushes today - couldn't find the key for the locking wheel nuts So I had to improvise. I know I'll fall over the key next week but the wheels needed to be off and the locking nuts un-damaged, so I came up with this idea.
Cut a short length (about 1") of 20mm copper pipe and slide it over the locking nut
It's a nice snug fit (this was an early attempt so it's a bit too short )
Take a 19mm socket and bash it on over the copper pipe. You will need to taper the end of the copper pipe slightly so it just fits inside the socket - but not much. The socket will push the copper pipe into the grooves in the nut and the soft copper wont cause any damage. Use gentle pressure to undo the nut with a T bar, ratchet of whatever - and it comes right off
I used the same piece of copper for all four locking nuts, but there wasn't much left of it at the end
It took a bit of experimenting to get the right size socket and this is obviously for the Rover 'Minilites' but it could work on other similar styled locking nuts.