The meeting in November is a good idea, thanks Phelim and Matilda.
I went to a 'Facilitation Camp' last week at a great community venue in Vauxhall (5 minutes from tube/Victoria line) organised by DecisionLab.org.uk and LondonCreativeLabs in association with FutureInFocus, Aptivate and Reos Partners. They used Open Space to run their event and I would think that most of the people who came would be interested in WOSonOS. The venue might be a good place to hold the meeting in November .... I'll find out more if others think this is a good idea.