Reaction Engines Limited is a British aerospace company known for developing advanced propulsion systems. Their most notable project is the SABRE engine, which combines jet and rocket technologies to enable efficient air-breathing flight at high speeds and altitudes. This innovative engine aims to revolutionize space access and air travel. Founded in 2008, Reaction Engines focuses on creating sustainable and cost-effective solutions for both commercial and military applications. The company collaborates with various organizations, including Airbus and UK Space Agency, to advance its technologies and contribute to the future of aerospace engineering.