The South West Secure Data Environment (SDE) will enable research that’s faster, fairer and safer. Due to go live in Spring 2025, the South West SDE is an innovative and efficient approach to conducting research with millions of people’s health and care records, while maximising privacy and security. It’s a secure platform for research and data analysis, being developed to the highest security standards. It enables trusted researchers to safely access data, including routinely collected data from the NHS and local government, for approved projects. Dr Rachel Denholm is the research lead for the South West SDE.