The Company is a privately-owned aerospace engineering research company, founded in 1989. It has been focused on the development of the SABRE rocket engine for over 30 years, alongside contributing to other advancements in thermal management technology.
Reaction Engines Limited (REL) was a British aerospace manufacturer founded in 1989 and based in Oxfordshire, England. The company also operated in the USA, where it used the name Reaction Engines Inc. (REI).