What is the real name of the entrepreneur known professionally as Levi Roots on the British series Dragons' Den?

The real name of the entrepreneur known professionally as Levi Roots is Keith Valentine Graham.

Levi Roots is the stage and business name of Keith Valentine Graham, a British-Jamaican musician, chef and entrepreneur. He adopted the public identity while building a career that combined reggae music, Caribbean food and consumer branding.

His appearance on Dragons' Den introduced a large television audience to his Reggae Reggae Sauce business. The pitch helped connect his musical persona with a food brand and became a landmark moment in the programme’s history.

People sometimes treat Levi Roots as his birth name because it is the name used on packaging, television and publicity. The distinction is useful when identifying biographies: Keith Valentine Graham is the legal name, while Levi Roots is the established professional name.