weird noise

[nonos]

My clio has started to make a humming noise that is most noticable at 30mph (after that I can't hear it as much due to road noise).
My best guess is that a wheel bearing is on its way. I don't know if it is a fair guess.
If it is what is the best way to find which one(s) are gone?
thanks

 

[Lunner]

jack the car up and spin the wheels one by one

 

[nonos]

I'll give that a go.

 

[.GAZ.]

wot u driving

 

[nonos]

as per veryvery small avatar, Mk2 172 FF

Added to my Avatar now