Which Dragon's Den investor founded the health-club business Bannatyne Fitness?

Duncan Bannatyne founded the health-club business Bannatyne Fitness.

Duncan Bannatyne is a Scottish entrepreneur and philanthropist who built businesses in several sectors before joining Dragon's Den. His leisure interests included health clubs, spas and hotels, and these activities became associated with the Bannatyne brand.

Bannatyne Fitness grew into a substantial chain of health clubs in the United Kingdom. The business is separate from Bannatyne's television career, although his visibility as a Dragon helped make his name familiar to a wide audience.

Viewers sometimes confuse the company with other UK gym chains because several Dragons have invested in leisure, fitness or wellness businesses. The defining link here is the Bannatyne name: Duncan Bannatyne founded and developed the health-club group carrying it.