Suggestions on this noise?

[Shaleskin]

Take the alternator belt off, start the engine and listen for the noise. If it's still making it the noise isn't to do with that area of the engine (obviously :-P) if the noise is gone try spinning the pulleys run by this belt and listen, when the tensioner bearing went on mine it was obvious from the noise it made...

If it is the alternator I'm not sure if you can buy more bearings for them, might be better to see if anyone has 1 going cheap on the sales pages or Ebay...

Thanks for the reply. Will do as you said later.