Ben Hammersley is the Prime Minister's Ambassador to Tech City, but don't hold that against him. He's really quite a fascinating and charming gent and not at all a smarmy politician.
When he's not running marathons in the Sahara desert, Ben is a writer, broadcaster and journalist. He reports on the effects of the internet on society, foreign policy, business, and culture ...not just on his blog either; his writing has appeared in proper dead-tree publications like The Times, The Guardian, and Wired UK (where he is Editor at Large).
To get an idea of how powerful Ben's writing can be, read his speech to the Information Assurance Advisory Council. Then take a look at his appearance at the British Council Annual Lecture last year.