The guests "from the Valley" included:
Biz Stone, Founder and CEO of Twitter
Bob Cart, Founder and CEO of GreenVolts
Julie Hanna Farri, Chair of the Board of Directors at Kiva
Jigar Shah, Founder of the Carbon War Room
Premal Shah, Founder of Kiva
Reid Hoffman Executive Chairman and co-founder of Linkedin
Salar Kalamangar, Vice President of Google Web Applications
Toby Prehn, Founder of G2 Energy
One of the keynote sessions was a debate on the future of social media, which featured Stephen Fry, Biz Stone (founder & CEO of Twitter) and Reid Hoffman (founder & CEO of LinkedIn).
Further Information
Silicon Valley Comes to the UK
Social Media Debate webcast