Which Dragon founded the UK business group Bannatyne Group?

Duncan Bannatyne founded the Bannatyne Group.

The Bannatyne Group is a UK health-and-leisure business associated with Duncan Bannatyne, whose entrepreneurial career expanded from smaller ventures into care homes, health clubs and spas. The group became one of the best-known parts of his business portfolio.

Bannatyne was an original Dragon when the British series launched in 2005. His tough negotiating style and distinctive Scottish accent made him one of the programme's most recognisable investors.

The Bannatyne Group is primarily connected with health clubs, gyms, spas and related leisure services. It should not be confused with Bannatyne's charitable work or with the many businesses in which he invested through the television programme. The company name derives directly from his surname, making the answer specific rather than a generic description of his business interests.