Back in the Autumn of 2011, Tara Acton went to Sweden to invetigate how the inventors of outdoor play do things. Supported by the Lady Allen Trust and reporting to Play England on her finds with them looking to emulate how things are done and imporove the standard of outdoor play in the UK.
Here is her write up and pics http://www.slideshare.net/janeacton/investigating-swedish-nature-play 
We are pleased to be sponsoring Tara in the Outdoor Swimming Soceity, River Dart 10k swim on 22nd September. Tara is swimming for charity and her chosen one is the Wild Fox Playground in Paington.
Full details of how you can donate coming soon.