This guide has been written in order to assist people who are providing training to trainers. It is based on our experiences of training trainers in relation to combating the trafficking in children for sexual purposes1, and draws from those experiences, but the methodology has also been used in the training of trainers on a broad range of issues. Consequently we think that, with slight adaptation, it can also be of use to those who are required to train trainers on other subjects related to children’s welfare and rights. Furthermore, the information relating to the techniques of training may serve as a useful refresher to trainers themselves.