I had this problem with Mum's Euro for over 6 months.
I had the creaking noise and a spongy Clutch pedal.
When I was working in the dealership I had the workshop controller check it every 5000 when it was there for a service. he could never find a problem.
Eventually got them to bleed the master cylinder. As a hopeful fix Spongyness come back in about 2 weeks. Got a new master cylinder under warranty. Still had the creak. Got new pedal bushes done under warranty. I still have a noise there which is the cruise control switch on the clutch pedal.
There is a bulletin out for them leaking.
Rob