Mozilla Festival, October 24 – 26, 2014 (London, UK)

http://2014.mozillafestival.org/

Shall we propose a session? I can most likely make the date on my way back from North America.

sure, go for it. I think what they are looking for is something hands-on, and where journalists and other webmasters can participate in creating something in a few hours.

Everything goes, not just hands-on. Actually, I went to a lot of pure discussion sessions last time I was there.