Half of Dragons’ Den investments fall through after the show

Many entrepreneurs appear on the show primarily to gain publicity for their business. When sales surge following the airing of their episode, they pull out because investment is no longer necessary.

“The world explodes for them after Dragons’ Den,” Ms Meaden said. “They get offered better deals in some cases, or think they don’t need the Dragons. But what they find when the publicity dies down is that they still need help running the business.”

According to the data, Peter Jones is the the show’s most prolific investor, offering funding to 54 of the 143 businesses.

The average amount pitched for is £100,000 and the average amount of equity given up by applicants is 40pc. The highest amount of equity ever given away on the show was 79pc by RK Records, which has since rebranded as Bannatyne Music.

Ryan Ashmore (left) and his business partner Liam Webb, both 18 at the time, sold 79pc of their business in return for £50,000 in cash

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The highest amount ever pitched for successfully in the Den is £250,000. However, on both occasions the deals fell through after filming.

Series 12 was not included because there was not enough to conduct full due diliigence. However, this series could skew the data, adding a record number of investments.

“I’ve done nine and got seven away,” said Ms Meaden. At the end of this series, Piers Linney, who recently left the show, could emerge as the Dragon with the highest investment per deal.

Kelly Hoppen, who appeared on the show for two series, added: “I was fortunate enough to make some very successful investments in the Den which I am still working with and will continue to do so.”

If Dragons do invest in a business, they are involved long-term. Some 38 of the 67 invested firms still have a Dragon on board. Some of the others have successfully exited or bought back the stake, while other have ceased trading.

Tiger Mobiles used data from Companies House, Duedil, the Dragons’ Den website and inidividual interviews with founders to compile the report.

An interactive analysis of every winning pitch on the Den is available to view here.