Any updates on the issue? Most of the 'squeaks while driving' sounds I've had have been from the bushings in the front suspension, which can't be diagnosed properly because they won't squeak when the car is up on a lift or moved by hand, but will when it's all put back together and carries the weight of the vehicle on the road.
The dealer are collecting the car on Monday to look again at the car. They are finally giving me a courtesy car. I have zero idea what it is. The noise can be heard outside the car as well as inside. I've noticed the squeaking reduces in wet weather. I'm not good with the mechanic side of things. I just hope it can be sorted.