Interrogation brought up my old adversary, the oil warning sensor (still haven't replaced it) along with a blown bulb (high beam) and power steering issue, which explained the whining I was hearing.
I replaced the bulb & erased the codes (apart from oil sensor fault which won't go), started the engine & all was well.
But, imagine a high beam bulb, not being used at the time, created a storm in a C cup
affecting the CanBus to emergency up the PAS pump 
I also need to find a moment to adjust the parking brake, which suggests the rear pads may be worn
It never ends
