Speakers have included satirist Armando Iannucci, politicians Tam Dalyell and Sir Menzies Campbell and Rachel Elnaugh of the BBC's Dragons' Den programme.
Away from the high-profile entertainment of the BBC's Dragons' Den programme, thousands of UK entrepreneurs regularly attempt to raise capital by pitching their companies to so-called angel investors.
The programme sees entrepreneurs pitch for investment in the Den from the Dragons - five venture capitalists willing to invest their own money in exchange for equity.