Where can I find a list of all UK _full_ postcodes including street name and their precise coordinates?

Question

Where can I find a list of all UK full postcodes including street name and their precise coordinates? They should be not like AB1, AB23 etc but AB1 2AA, AB23 5ZZ etc.

Answer 1

The OS "free" version is useful, but it does have a few limitations, for example no data for Northern Ireland, the Isle of Man, Guernsey or Jersey.

I vote for Doogal's version with the extra latitude and longitude data, which is more useful for geo-mapping like OpenLayer.