Dragons' Den first transmitted on BBC Two in January 2005 and aired its seventh series in the summer of 2009.
First launched in Japan, Dragons' Den is now an international brand with versions airing in countries across the globe.
Entrepreneurs pitch for investment in the Den from our Dragons, five venture capitalists willing to invest their own money in exchange for equity.
As of 30th June 2009, these five Dragons have agreed to investments totalling over £5.5 million.
Deals have ranged from Deborah Meaden's relatively modest £35,000 for Sarah Lu's personalisable dolls to the £250,000 Deborah Meaden and Theo Paphitis agreed with Michael Cotton for his misfuelling prevention device in August 2008.
The show has spawned some memorable phrases and inspired moments. Theo Paphitis's refrain "Why should I spend my children's inheritance on this?" is as acerbic and well-known as Duncan Bannatyne's dismissive "That's ridiculous, I'm out".
And who can forget James Seddon's failure to demonstrate his water-free egg cooker or Levi Roots singing the praises of his home-made "Reggae Reggae Sauce". Our history page highlights some of the unforgettable entrepreneurs to grace the Den over six series.
With two new Dragons and your chance to get more involved.
Missed any action? Watch, read, rate and have your say on the class of 2010.
Evan explains the fundamentals, a full glossary, and links to further resources.
Apply to enter the Dragons' Den.
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