Which Dragon's Den investor was known as the founder of Phones 4u?

John Caudwell was known as the founder of Phones 4u and later appeared as an investor on Dragon's Den.

Caudwell founded the British mobile-phone retailer Phones 4u with his brother Brian Caudwell. The business grew during the rapid expansion of mobile-phone ownership in the United Kingdom and became one of the country's major high-street phone retailers. John Caudwell later became associated with philanthropy and the Caudwell Children's charity.

His time on Dragon's Den was shorter than that of some of the programme's best-known regulars. That distinction matters because viewers may remember Caudwell as a dragon while overlooking his separate business history. The answer refers to his entrepreneurial connection with Phones 4u, not to the company he invested in during a particular pitch.

Phones 4u later ceased trading in 2014 after its network partnerships ended. That later event does not change Caudwell's role in founding the retailer or his identification with the brand.