The UK Civil Aviation Authority has taken significant steps to promote the use of hydrogen as an aviation fuel with the launch of the Hydrogen Challenge. This initiative aims to support innovative projects that advance the application of hydrogen technologies in the aerospace industry. In its second round, the challenge has awarded funds to companies like Cranfield Aerospace Solutions, Exeter Airport Consortium, and ZeroAvia, indicating a growing interest in hydrogen-electric propulsion systems. Additionally, UK startup Qdot is making strides in developing a heavy-payload tilt prop uncrewed cargo aircraft with hybrid hydrogen-electric propulsion, aligning with the industry's shift towards sustainable aviation solutions. This focus on hydrogen reflects a positive sentiment towards cleaner energy sources and the adoption of environmentally friendly practices in air transport. The UK's commitment to hydrogen research underscores a promising future for hydrogen as a key component in the aviation industry's transition to more sustainable operations.