Unislim (Author) For more than 50 years, Unislim has helped hundreds of thousands of people across Ireland and Northern Ireland embrace healthy living, lose weight and reshape their lives. A family brand, started by Agnes McCourt in 1972, Unislim is passionate about good, nutritious food and adopting a holistic lifestyle for more sustainable results. Fiona Gratzer (Author) Unislim CEO Fiona Gratzer is carrying on her mother Agnes' work and believes her mission is to help people live the best lives they can, filled with energy, happiness, and good health. Fiona understands how a person's body weight, diet and exercise regime can impact their mental and physical health, and, as a personal trainer and integrative health coach, she brings cutting-edge knowledge to everything she does.