Normal 'V' belts are generally made to one or another standard specification. Most of the more exotic modern varieties too - like timing belts. So you don't necessarily need spares specific to your saw.
Chances are if you bring the old belt into a specialist power transmission supplies place that they will be able to match it up with a new one...
You could also try looking at the Bearing Boys website - they may have something suitable available.
That's the good thing about bandsaws - there aren't many components that can break or go missing. And, if you do require spares, there's often something available from many sources that'll suit your machine. :wink: