So the concept is pretty simple, you take a photo of the locking bolt or nut, then send it off with the registration year, make and model of your car and they send you a replacement key. You can see the general process in the image to the left. At the time of writing this costs £38.00 + P&P and they offer a range of postage and turnaround time options as this is a worldwide service. And yes, they really do mean worldwide - they told me they sent one recently to Australia which is about as far as you can get from the UK! They don't charge for matching your key, just for the key itself and they offer a no quibble guarantee. (although I didn't get to test this out as my key worked perfectly!).
After a few chats with mates in the trade a Mercedes was selected. The reasoning behind this choice was that there are more than a few Mercedes of this type around and they have highly recessed locking wheel bolts that would make taking a clear photo very difficult. Also because having kids has made me devious, I decided to make matters even more challenging.... so we rang around until we found a very "late model" car - in other words an older model that was registered at about the same time the replacement newer model in the range was introduced. Late model cars like this are notoriously difficult to match parts for as they often come up wrongly on supplier databases and may even have a mix of old and new parts on peripherals...like wheels!
rather than the workshop camera. Let's face it if this service is going to work it has to work with kit anyone can get their hands on. You can see the actual photo I took to the left. Will had also asked me to measure the head of a wheel bolt. However, because they were so highly recessed this would have been impossible for your average Joe without a set of sockets....so I told Will that he'd have to do all the matching from the photo, make, model and registration date alone. That said, I was lucky as this was a Mercedes and could be matched without a bolt size (so I'm told). Most cars can't be (especially Nissan's and Renault). So if you find yourself in this predicament, get your hands on an ordinary socket set (or pop down to your local mechanics who will have one). The size of the socket that fits your ordinary wheel bolts (i.e. not the locking ones) will show you the size of the bolts. For example, if a 18mm socket fits your wheel bolts snugly this tells you your bolts are 18mm. I'd use this approach rather than measuring them with a ruler as you cannot go wrong and it will work even if they are highly recessed like mine - alternatively lockingwheelnutkeys.co.uk have a diagram on the FAQ page of their site showing you how to measure your bolts with a ruler.
However, before testing it on the car's locking bolts, I pulled out the original locking wheel nut key for the car so that I could do a comparison. You can find images of the two keys (original and replacement) to the right. Both appear to be identical except for the scratches on the older key. It would seem that Victoria had sent a genuine replacement Mercedes locking wheel nut key in less time than I can get it from the main dealer and it had been matched from just a photo.... in your face overpriced main dealer guy! A few minutes later and it was confirmed - the key fitted the locking bolts on the wheels perfectly and worked just fine. So all in all a perfect job by Will and Victoria.