Under the bonnet you will find the brake pedal box. There is an inspection plate on it (six screws if I remember correctly) - take the plate off and spray in plenty of WD40 (or chosen aerosol lubricant) this will get to the top of the clutch pedal mounting and stop the squeak - it was doing my friggin' head in on mine when I first got it.
I found this by using the search function BTW a few months ago.