First thing on a morning when i've engaged a gear and let the clutch out there is always a noise which i can't really describe (nowt like detail huh?). It's not metalic, it's kinda different to that
Anyway, after a couple of miles, it dissappears almost completly (but not totally). Someone has mentioned thrust bearing - sound right?

 

yep that sounds about right,can you feel the noise as well through the clutch pedal as the noise is often associated with a buzzy feel through the clutch pedal

 

Sounds close
I had a new clutch fitted back in Jan. Is it not sommat that would be replaced with a new clutch?

 

yes and no,it should be changed as it makes sense while the clutch is stripped and it does come with a clutch KIT,but if they bought the clutch parts seperate,they may have only changed the actual clutch plate to make more money and not the basket and bearing,you should get a 12 month warrany if it was done in jan,just check on your receipt and see if it says clutch change or clutch kit.it sounds like to me they have skimped on doing a proper job.