However, one must bear in mind that the standard MoT check has the front of the car lifted slightly (wheel off the ground), putting the stub axles at one end of the KP, outside of the main wear region.
My local MOT station has two plates on the ramp you place the front wheels on. They are hydraulic and move the wheels whilst the suspension is loaded.
Slight wear observed on the nearside of my car at 15k miles, I asked when I should start to worry and the tester replied " when it starts becoming a problem whilst driving"