Lorna Mitchell recently attended the cicon2010 conference in Bristol (a CodeIgniter-centric event) and has written up a summary of her time there.

I spent the weekend in Bristol so I could attend cicon2010 - a volunteer-organised first-edition conference around the CodeIgniter PHP Framework. [...] I saw two talks, both of which were actually really good, which is pretty impressive when you're going on stage to a rather fed up audience! Kudos to Kevin Prince and Joel Gascoigne for their talks.

She also mentions talks from Phil Sturgeon and Adam Griffiths but notes that, despite the good content of the talks, the actual event wasn't run all that well. As a result (of both her comments and experience in event organizing) she'll be posting advice for conference organizers to not have some of the same issues.