Even if I bought a pickguard that has cutouts for body mounted pickups, knobs, and a switch, I'd still encounter problems. The pickup rout on the body and pickguard do not align, the pickups routs on the body have a smaller amount of wood separating them, compared to the amount of plastic separating the routs on the pickguard. I can get the bridge and middle rout in line with the pickguard but the neck rout is out of whack by about 3mm. The knobs and switch do not align with the holes, I'm not sure a pickguard with cutouts would align either but you've got me thinking Simon, I can custom order a pickguard with cutouts from a guy in the US that offers an option of sending a cardboard replica of the pickguard to you just to be sure it lines up with everything before he even creates the actual pickguard.

And I've also discovered Ibanez Roadstar pickguards that look like they might fit?!

P.s Simon i know what you mean about the pickguard being flexible enough to cope with the curve of the body. It is 3ply and did ok with the test fit, I could maybe just cut the pickguard in half where the point of stress is and even line up the switch and just drill new volume and tone holes rather than adjusting to the already existing holes and routing a new cavity for the switch.