I Found Them!
Our eldest son, Matt, needed to replace a brake light bulb on his car at the weekend and, like most modern cars, there are a variety of tamper proof screws that require special screwdriver bits to undo them. It's the type used once in a blue moon and I normally spend ages hunting everywhere for them, the garage, the loft, the tool bag in the utility, the oddsy drawer in the kitchen, the boot of the car, the shed etc. But no. I went straight to the tool bag in the utility and there they were. Result!