How can I GeoCode a table of addresses in SQL Server automatically?

Is there a way to geocode a table of addresses so that latitude and longitude columns can be updated with the correct details.

Ideally I would like a system th开发者_开发技巧at will operate every so often, geocoding any address that did not have a lat / long. Currently there are areound 30,000 addresses in said table.

Thanks in advance

Edit

These are indeed postal addresses for the UK area.

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I would suggest using SQL CLR to write a stored procedure where the lookup can be saved to the address table. Generally this s easy using google web service. If you require high volume there is a fee but the free limit is quite high.

Then you could run an agent job to call the sproc which would on process adressez that were not prevously geocoded.