I would imagine so but it will require the tyre to be removed as the valve is located from the inside and pulled through the hole in the rim to seal it.
I put my normal ones on by using a rag and a pair of pliers.
a) Go round the neighborhood and scare all the kids sh*tless so that they don't steal them. I approached a few kids who I suspected pinched mine (the missus saw them hanging about along the path beside ours) and asked them if they knew of anyone pinching caps off cars. They said "it wasn't us but there's a boy in our class who does it!"
b) Stock up on the normal ones from MINI dealers, they are only 20p each and I got 8 for free when buying Bonnie Scotland's mats .
I think stocking up seems to be the answer KenL. I STILL can't get there lockable buggars off and that's after spraying them with WD40 every 1/2 hour all day and about 4 kettles of water! I wouldn't mind so much by my offside front looks a little low which is how I found out about the problem in the first place. :(
Why dont you drive the car to a dodgy area, park it up and let the local children work their magic !
If anyone can get the caps off it will be them:evil:
Failing that buy complete new set of wheels and tyres and sell the old ones with lockable valves at no extra cost