It's interesting that Startup Britain had real entrepreneurs help. I'm interested to know how much though, did they actually propose the plan of what is being done or just had their names associated with it?
I guess i'm a little biased as I've ran startups and obtained the information they try to put across from better sources and what they offer for saving money means nothing for a tech startup perhaps others might find it useful. But things like Appsumo's recent lean startup bundle really showed how to save money or things like Amazon's free tier EC2 hosting.
The only thing that looks interesting to me would perhaps be the mentoring marketplace and the pledge matchmaker if they can make it work. Some of the other new features are already being done, why create yet another place to do this. 'best of web' just to go to delicious and search for the tag startups 'A calendar of enterprise related events' ha, upcoming? meetup? Lanyrd?