London Haskell User Group
Neil Bartlett (who used to work at Dresdner Kleinwort, my employer) dropped me a mail to mention that he's started a London Haskell User Group, and that the inaugural meeting on 29th 23rd May will include a talk by none other than Simon Peyton Jones of GHC and Software Transactional Memory fame!
Definitely one for all those interested in functional programming and concurrency in general (and these days what forward-looking software engineer isn't?). More details can be found on the LondonHug page.