Which Dragons' Den investor is the founder of Phones 4u?

John Caudwell, rather than Peter Jones, Theo Paphitis or James Caan, is the entrepreneur associated with founding Phones 4u.

Caudwell founded the British mobile-phone retail business Phones 4u with his brother Brian Caudwell. The company grew rapidly during the expansion of mobile-phone ownership in the United Kingdom and became a major high-street retailer.

John Caudwell appeared as a Dragon on the BBC programme, bringing experience from telecommunications and retail to the pitch room. His business background made him especially associated with mobile phones, although the show featured entrepreneurs from many other industries.

Phones 4u later entered administration in 2014 after network providers stopped supplying the retailer. That later event is distinct from Caudwell's role in creating and expanding the company, which is the key fact connecting him with the business.