Following the undertaking of a successful pilot trial of KiVa in thirteen Welsh schools and four Cheshire schools during 2012/13, the Centre for Evidence-based Early Intervention at Bangor University and the Children’s Early Intervention Trust, teamed up with The Social Research Unit at Dartington, to implement and evaluate the KiVa Anti-bullying programme in a randomised controlled trial in twenty primary schools in Wales with support from the programme developer, Professor Christina Salmivalli, and funding from the BIG Lottery Innovation fund.