Which Dragon's Den investor was the founder of the Bannatyne Group health-club business?

Duncan Bannatyne was the founder of the Bannatyne Group health-club business.

Duncan Bannatyne built a business empire that included health clubs, hotels and spas under the Bannatyne brand. His success in leisure and hospitality formed a major part of his public profile before and during his time as an investor on Dragon's Den.

Bannatyne joined the original British panel and became known for direct questioning about profitability, ownership and the practical operation of a company. His business background made health, leisure and service-based pitches especially relevant to his expertise.

The Bannatyne Group should not be confused with a single gym or one television investment. It is a broader business group associated with health clubs and related leisure properties. Duncan Bannatyne's name is the source of the brand name and identifies the Dragon in this question.