In BBC's Dragon's Den, which Dragon is the founder of the Phones 4u retail chain?

John Caudwell is the founder of the Phones 4u retail chain associated with Dragon's Den.

Caudwell appeared as a guest Dragon on the British programme and was known to viewers as the entrepreneur behind Phones 4u. The company became a major UK mobile-phone retailer, selling handsets and network contracts through a nationwide chain of stores.

He founded the business with his brother Brian Caudwell. Its growth helped make John Caudwell one of Britain's most prominent self-made entrepreneurs before he became known for philanthropy as well as business. His charitable work has particularly supported children and medical causes.

The answer is sometimes confused with Peter Jones because Jones is also strongly associated with technology and telecommunications investments. Duncan Bannatyne and Theo Paphitis are likewise prominent Dragons, but neither founded Phones 4u. The company name and founder are the key identifying facts.