Big data could enable significant savings for the UK public sector. Proper analysis of large datasets could reduce fraud, narrow tax gaps, and enhance overall efficiency, potentially saving £250-£500 billion per year. However, organizations need people with data science skills and the ability to find meaningful insights. Any big data use must also have a clear public policy justification and be done responsibly. With the right investments, the UK is well positioned to benefit from the big data revolution through innovation and economic growth.