This announcement seems to have slipped under the radar a bit, but
(assuming I'm reading it correctly) it's potentially very good news:
http://www.nationalarchives.gov.uk/news/498.htm
I'm no expert but it looks basically like a CC-BY license, with a few
additions to explicitly spell out moral rights. They're claiming it's
interoperable with CC, but I haven't seen anything from Creative
Commons themselves on the issue yet.
Here's more about where it will be applied:
http://www.nationalarchives.gov.uk/information-management/government-licens…
So it seems like it will apply at least to things previously under
Crown copyright and Crown database right by HMSO, with a few
exceptions. The exclusion for the other delegated bodies (last bullet)
is a major limit, but we can hope that they will follow HMSO's lead.
Pete / the wub