Steve Bennett, 34
What does it do? Retails computer software, music, videos and games.
How it's gone: Once tipped for a £700m flotation, Jungle was sold last September to Argos owner Great Universal Stores for £33m, with Bennett pocketing around £11m. Still working for Jungle but has other ideas up his sleave. Working on Globalshed.com, a DIY portal, with friend and former Big Breakfast presenter, Johnny Vaughan.
Valuation: Steady at around £15m.