I've just been talking to Daniel Mietchen who is a Wikimedian in Residence for Open Science. This position has just been profiled on the Wikimedia blog, [1] and will be discussed in next week's Signpost.
He has suggested that Wikimedia UK could perhaps have an editathon or event around the Science Online conference in September in London.
In addition people may want to attend the event to represent Wikimedia UK. [2]
[1] http://blog.wikimedia.org/2011/07/20/joining-forces-with-open-science/ [2] http://solo11.eventbrite.com/