The UK government. There's so much information held in their records that would be great to get at through an API. Can I include all the bodies funded by the g

The UK government. There's so much information held in their records that would be great to get at through an API. Can I include all the bodies funded by the government, like the Royal Mail (for their postcode db), Ordnance Survey (for their map data) to name a couple. They're funded by our taxes, so why not allow free access to it?