Well I guess there's two issues at play here: 1) Is it due to cultural reasons that Britain isn't producing young tech entrepreneurs 2) Are British young tech

Well I guess there's two issues at play here: 1) Is it due to cultural reasons that Britain isn't producing young tech entrepreneurs 2) Are British young tech entrepreneurs going abroad to start companies. I think my argument refutes the first but supports the second point. While there are young tech entrepreneurs in the UK (Mashable for example was started by a 19 year old, numerous indy gaming studios are led by 20-somethings) a lot of the more talented ones who are aiming at global consumer markets are clearly head abroad.