[QUOTE=Wil Davis;15128219]If it's a 'creak' or a 'tick' then it might be caused by a loose spoke!

No, its a definite hi pitched squeek, that obviously gets faster, the faster you go.
Its hard to tell if it's metal on metal - if anything, it sounds possibly like a kids squeeky vinyl toy (if you can imagine).
It just starts, just stops, and just starts again...I no obvious fashion or timeframe.
VERY annoying. Considering the cost of the bike -and it's brand new.