Nigora Bannatyne says she thinks of her body 'like a car' as she criticises the unhealthy lifestyles of 18-year-olds. The wife of Dragon's Den star Duncan Bannatyne shared the secret to her incredible looks during a holiday with Duncan and pals. Nigora, 43, who, first met Duncan, 74, when he visited the Harley Street dental practise where she worked told …