I bought some M14x1.5 TaperPro locking wheel nuts on eBay a while back and fitted them, stuck the lock bolt somewhere safe and the little sticker inside the glove box. Come the other day when I wanted to change the boots on the ball joints, the lock bolt was nowhere to be found. On thinking back when I last had it all apart, I think that I probably managed to flip the locking bolt out of its hideyhole into the field at Eddy's Victoria Farm at Techenders. Somewhere near the container in the corner. So I registered the code on the sticker online last week, waited for an email from Taiwan. Then I phoned up the UK agents SixOneTwo and gave them the code and my name and address and credit card details. Two days later I have a replacement locking nut, for the princely sum of £10. The service works.
