Andrew Walker is Head of Insights at the Health Innovation Network (the Academic Health Science Network for south London) and Deputy Lead for NIHR Applied Research Collaboration (ARC) South London’s Implementation & Involvement Team. A physiotherapist with a PhD in implementation science, Andrew’s role involves helping to build the evidence and practice of implementing innovation and evidence-based interventions across health and care, with a particular interest in spread and adoption. His work at the Health Innovation Network has an emphasis focus on digital technology and health inequalities. He has experience of designing and delivering mixed methods evaluation and research studies working within the NHS, central government, academia, and research consultancy.