The Strategic Content Alliance has released Towards a UK Digital Public Space—A Blueprint Report.
Here's an excerpt:
"Imagine … that much of the UK's publicly held cultural and heritage media assets could be found in a unified online space … connected together, searchable, open, accessible, visible and usable … in a way that allows individuals, institutions and machines to add additional material, meaning and context to each other's media, indexed and tagged to the highest level of detail … This emerging vision of a free-to-everyone, open access environment for learning and creative endeavour has been referred to as a digital public space."
Digital Scholarship | "A Quarter-Century as an Open Access Publisher"