What can Europe do for The Digital Public domain? In brief: a lot: aking control in digital creativity, making copyright fit for the Digital Agenda.
It's an old question but some good summary in the pdf book The Digital Public Domain wrote about it a few years back. You can download it from OpenBooks. T
Others and myself worked on some early prototypes and Creative Commons license
The UK today has an Open Government license v 3.0 (OGL) (very close to CC 4.0) and NonCommercial Government license (see the framework of UK Government Licensing for public sector explained here: e.g. National Archives).
Hope the BBC's project together (spearheaded by Tony Ageh) with the British Library, Kew Gardens, National Film Archive and other does see the light of day.
But also there is an Open Data Licensing for different purposes.can do a lot and other institutions, but not there yet.