This document summarizes a presentation given by Jacqui Alexander and Margaret Huggins on integrating organizational development, project management, and Lean Six Sigma principles to improve business performance at GSK. The presentation aimed to share GSK's story of creating an Accelerating Delivery and Performance (ADP) team that combines these disciplines, provoke thinking about how collaborating across specialties can boost impact, and provide insights that may apply elsewhere. The ADP approach was developed based on opportunities identified in Lean, OD and PM. It established principles of accelerating change and fundamentals for delivery. The ADP team applied its hybrid approach across projects, learning lessons to build momentum and scale up its work, eventually embedding and adapting its methods more broadly.