Simon Murdoch, 39

Episode 1 Partners

What does it do? Provides financial backing and advice for internet start-ups.

How it's gone: Former boss of Amazon.co.uk, Murdoch set up £70m venture capital fund with investment bank JP Morgan. Invested £17m in nine businesses, but only one so far this year - the marketing services company, The Works.

Valuation: Made an estimated £5m from sale of Bookpages to Amazon. Rich enough never to have to work again.