Look up your local bearing supplier in the phone book. BSL, BRT, Brammer or similar . Threre is bound to be a local one.If they dont have one what you want,they usually get you one for the next day.They can also usually get all sorts of other useful stuff like loctite ,bearings (obviously,but will often give you a good discount if you ask),silver steel (clutch push rods) and have all sorts of bearing and tool catalogues you can look through.
Hope this helps,Mike