That's a real shame! I hope you would not mind my making the same suggestion, of creating structured lists of UK public artworks, to the organisers of Wiki Loves Monuments instead? According to the timeline here the first arrangements for WLM 2014 are just about to begin.

We are lucky in the UK in that we have no problems concerning FOP of 3D works (2D works are another matter), and I'm sorry to hear about the legal difficulties Wikimedia Sverige has encountered. I hope things will improve in 2015.

Best regards,

Marc