Had the car booked in today for Service and been told the car needs a new steering rack.
I asked them to have a look at suspension noise and steering creaking / grinding noise.
They came back saying the car needs a new steering rack - covered under warranty (good job!)
I know Kniffa had the same problem,- I spoke to Vauxhall Technical Assistance they say it's not a "recognised" fault !
Just thought it's a bit odd.............