On Thursday, 25 August 2011, John Wild <john.wild@network.rca.ac.uk> wrote:
> I’m looking for people interested in getting together once a month to informally exchange open source Hard/Software skills and knowledge. All levels of expertise welcome.

You should check out London Hackspace: http://london.hackspace.org.uk/ - it's basically dedicated to that every day of the week for members, and there's weekly open days too as far as I remember.

Best, Michael