Creaking when cornering?

[[FnG]magnolia]

My wife's Ford Focus occasionally creaks when cornering. It's very random - it doesn't seem to matter whether we're turning left or right, fast or slow, gradient etc. It often doesn't happen at all.

The car's a 54 plate with 30k on it and has just passed its MOT. The noise doesn't bother me at all to drive it but we're trying to sell it and I can imagine this causing a potential buyer some nervousness.

Does anyone know what it could possibly be? I understand there's probably many, many things it could be but any obvious ones? I'm no mechanic

 

[[FnG]magnolia]

Thanks for the replies. Is this one for the Dealership (it's out of warranty) or for a private garage? Finally, are any of the above things particularly expensive and/or dangerous not to fix? I don't want to pump money into a car we're selling.

 

[[FnG]magnolia]

Thanks very much, I appreciate that I'll have a look at the weekend.

Out of curiosity, is this an informed guess or have you had a Focus with a similar issue?