Entrepreneurs discuss how much money you need to start a business - and where to get it from - with Evan Davis.
Why do some start-ups require millions and others just a few hundred pounds? And what are the benefits and pitfalls of finding investors on the web? It's called crowd-funding and many consider it to be the next big thing in venture capital.
Mark Popkiewicz, founder, MirriAd
Julie Deane, founder, The Cambridge Satchel Company
Jonathan Medved, venture capitalist and founder, Our Crowd
Producer : Rosamund Jones.