Well, removed the piece of PVC which has been covering the SRS warning light and cured the problem by repairing the broken wires to the pretensioner. Also had the rear brakes apart and I have to ask the question "Why?"....
Both calipers were siezed on the slider pins. Siezed with rust in the rubber boot. This doesn't happen overnight, over month or even over year, given the amount of rust.
WHY would any service not check this? I always pull the boots back and check the motion of the slider. Siezed sliders lead to poor pedal, badly worn uneven shoes, and eventually a wrecked calipers.
So IF you are checking your brake pads, please check the slider pins, it's a 2 minute job, and a small tube of graphite grease is cheap....a lot cheaper than a calipers!