Which former Dragons' Den investor founded Phones 4u?

John Caudwell, a former Dragons' Den investor, founded the mobile-phone retailer Phones 4u.

Caudwell established the business with his brother Brian in the 1980s, initially trading as Midland Mobile Phones. The company later became known as Phones 4u and grew into one of the United Kingdom’s best-known mobile-phone retailers, with shops across the country.

Caudwell appeared as a Dragon on the UK programme after building his fortune in telecommunications and retail. He was associated with the panel during the show’s early years, before later leaving the regular line-up.

Phones 4u is often confused with Caudwell’s charitable work or with other Dragons’ companies. The retailer was his major commercial success in mobile communications; the Caudwell Children charity is a separate organisation founded by him in 2000.