The UK Civil Aviation Authority has expanded its Hydrogen Challenge to drive the adoption of hydrogen as a zero-carbon aviation fuel, aiming to position the UK at the forefront of hydrogen propulsion technology in the aerospace industry. The initiative covers various aspects like developing cutting-edge hydrogen fuel cell power systems for aircraft, enhancing airport infrastructure for hydrogen use, conducting scientific research on hydrogen technologies, and refining the technology through flight trials and safety assessments. The collaboration between the UK Civil Aviation Authority and leading UK companies seeks to revolutionize the aviation industry and ensure a sustainable future by preparing for the widespread use of hydrogen fuel. Projects under the Hydrogen Challenge include testing regulations for hydrogen fuel cell electric propulsion systems, exploring scientific challenges of hydrogen combustion in gas turbines, and designing hydrogen-powered aircraft and unmanned systems. The initiative involves key players like Cranfield Aerospace Solutions, Oxford University, ZeroAvia, Qdot Technology, Rolls-Royce, and more, each contributing to advancing hydrogen technology in aviation. The projects aim to create a better understanding of hydrogen technologies, shape future regulations, and ensure safe adoption into the aerospace sector. By extending the Hydrogen Challenge for three years to maximize development potential, the UK is taking significant steps towards becoming a global leader in hydrogen propulsion. The results of the 2024 Hydrogen Challenge will soon be shared, demonstrating the progress made in adopting hydrogen as a sustainable fuel source in aviation.