Dave
Quite scarce second hand I believe.
For new, reasonably priced items try 'glostertooling' on EBAY, an example is:
http://cgi.ebay.co.uk/30-INT-1-inch-...item5640bef284
I have bought a few R8 bits from them and was pleased with the price/quality.
You could also try asking ''feetninches' on here as he may still have some 30 tooling.
Regards Carl.