TOX247 Ltd and its Academy of Workplace Substance Management are the authors of all learning materials, course content, and publications. We are self-publishers and distributors of our own exclusive written material, which exceeds 750,000 words. We have many years of specialist experience and application to deliver to our students, and our clients. There is much more on the way. We believe we have singularly produced and published the largest body of material in the world dedicated to workplace substance management.