Peugeot 206 1.4 sport, screeching noise when engine cold?

need to know what this screeching noise is when the engine is cold then disappears when it gets up to temp after like 10 minutes of driving......it also disappears when u press clutch in and then comes back when u take foot off, and u only have to slightly start putting the clutch pedal in and it stops making noise.
I have had this problem for months now and has got no worse nor better but just doesn't sound good lol.
The noise sounds like screeching or like something scratching as it goes round...hard to explain really but still
Help with this would be appreciated thanks :-)

Jamie
August 2010