Steering creak/squeak?

Hey,

I am aware of a fairly common knocking from the steering rack, but this issue sounds different.
When turning the wheel fully I'm getting a squeak at the ends...see video. Excuse the rustling of my jacket, but the creak is clear when you hear it. I'm pretty sure it's inside the car itself...

Any ideas?

[video=youtube;0-we7keP1q8]http://www.youtube.com/watch?v=0-we7keP1q8[/video]
 
I've been getting this too recently! I put it down to the cold weather and expanding contracting plastic / metal...