Jeff Ditchfield is a successful author, outspoken campaigner, and activist. He was part of Bud Buddies, the organization that supplied cannabis free of charge to medical users from 2002 to 2007. He is internationally acclaimed and respected for his research on cannabis-based oils and preparations for medicinal use. Mel Thomas is a former commercial grower who now campaigns against cannabis prohibition and has written for Releaf, Weed World, Cannabis Culture and Grow Magazine as well as authoring the wildly successful grow book Cannabis Cultivation, which has been in print for 10 years. Between them, the authors have written four best-selling books on cannabis and are both involved with Bud Buddies II, a non-profit organization dedicated to helping and advising medical marijuana patients and cancer sufferers in particular. Both live in London.