This pilot study examined the impact of a 10 session, group-based, early-intervention cognitive behavioural therapy (CBT) programme (Cool Connections) on anxiety, depression and self-concept in nine 8-11 year old pupils in Northern Ireland. The intervention was facilitated by a teacher, education welfare officer and two classroom assistants, with support from the school's educational psychologist. A group of pupils identified by teachers as presenting with symptoms of anxiety and depression or low self-esteem and who scored in the mild, moderate or severe range of difficulties on the Beck Youth Inventories took part. Findings indicate statistically significant improvements in both anxiety (t(8) = -3.29, p < 0.017) and depression (t(8) = -3.06, p < 0.017) but not self-concept (t(8) = 2.63, p = 0.030). The article concludes with strengths and limitations of the current study, professional reflections on implementing a multi-agency, group-based, CBT intervention and implications for future research and educational psychology practice.