Which Dragon's Den investor launched the fitness chain Bannatyne Health Club?

Duncan Bannatyne launched the fitness chain Bannatyne Health Club.

Bannatyne built a substantial leisure business that included health clubs, spas and hotels. The fitness operation became known as Bannatyne Health Club, linking the brand directly to the entrepreneur who established and expanded it.

He was one of the best-known investors on Dragon's Den and appeared on the programme from its early years. His business story began in other sectors, including care homes, before he expanded into leisure and hospitality.

The phrase “launched” is used here for the branded chain rather than for the invention of commercial fitness clubs in Britain. Bannatyne Health Club belongs to the wider Bannatyne Group, so answers naming the group rather than the investor do not identify the founder asked for.