Creaking noise, when turning on the steering wheel

Hi all, I have a 2014 Toyota auris touring sport 1.6 petrol with approximately 87000 km on the clock. I have had the car for around 1 year. The creaking noise occurs, when I turn sharply on the steering wheel to the (right or left) or when I drive over a a speed bump with a slow speed, though I can't hear the noise every time. The noise is only hearable with low speed. I have had this noise since I bought the car and the Toyota dealer that I bought the car from told me that there is no

I would agree with your diagnosis, Countrylad, except on our car, when I removed the anti-roll bar bushes, (it was almost enjoyably easy), and thoroughly silicone greased them, the noise nature/frequency was unchanged, a big surprise. I should add that the rubbers are simple mouldings rather than metal/rubber combinations. About 2 weeks later I sprayed silicone oil on the lower suspension bushes (A-frame bushes) and, despite expecting no improvement, the noise went away. By this time t