Pioneering a new class of propulsion for reusable launch vehicles

Our goal is to deliver a truly versatile propulsion system - a hybrid air-breathing rocket engine that can power an aircraft from a standing start to over five times the speed of sound for hypersonic flight in the atmosphere, and over 25 times the speed of sound for space access. With its wide range of operation and scalability, the Synergetic Air-Breathing Rocket Engine (SABRE™) represents a defining moment in powered flight.



A new class of engine for propelling both high speed aircraft and spacecraft.

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We have developed world leading capabilities in advanced heat exchanger development, design and manufacture.

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To build the world’s most powerful cooling systems, we’ve invested in the most advanced manufacturing technology.

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The brightest stars

We're looking for the world's most talented people to join our team. Innovation, commitment and quality are at the heart of what we do and we want you to be part of it.

See our latest vacancies and apply for your place in the team building the future of air and space flight.

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UK Space Conference 2019

We will be exhibiting at the UK Space Conference between 24 – 26 September 2019 at the International Convention Centre (ICC) in Wales.

from: Tuesday, 24th September 2019
until: Thursday, 26th September 2019

Reaction Engines test programme successfully proves precooler capability at supersonic heat conditions

A key element of the revolutionary SABRE™ air-breathing rocket engine successfully passes the first phase of high-temperature testing.

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Reaction Engines scoops two awards at South and Vale Business Awards

Winners of Large Business of the Year and Employer of the Year.

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ESA completes further design validation of Reaction Engine's revolutionary air breathing SABRE™ rocket engine

The development programme of the world’s first air-breathing rocket engine has taken an additional significant step forward, which will lead to major testing milestones being undertaken within the next 18 months.

In News