United Kingdom · Who invested in Reaction Engines?
Reaction Engines's investors include Baillie Gifford, Boeing HorizonX, Rolls-Royce, BAE Systems and Woodford.
201820192020202120222023
$38MRound$5.4MRound$45MRound$4.8MRound$148KRound
United Kingdom · Funded startup
Who invested in Reaction Engines
Funding summaryUpdated 26 Oct 2026
$93Mraised across 5 rounds since 2018, from 5 sources
$38MRound$5.4MRound$45MRound$4.8MRound$148KRound
- Latest round
- Round, $148KMay 2023
- Biggest round
- $45MRound · Sept 2022
- Investors
- 5
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Round, $38M Apr 2018
- Biggest round
- $45M Round · Sept 2022
- Usual gap between rounds
- 9 months the median of 4
The rounds
- May 2023Round$148K
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
- Feb 2023Round$4.8M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
- Sept 2022Round$45M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
- Dec 2021Round$5.4M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
- Apr 2018
Funding filed with regulators
Reaction Engines filed 6 raises, $56M in all. Filings say how much was sold and to how many investors; they never name the investors.
- May 2023$148KUK share allotment
- Feb 2023$4.8MUK share allotment
- Nov 2022$1.4MUK share allotment
- Oct 2022$4.1MUK share allotment
- Sept 2022$40MUK share allotment
- Dec 2021$5.4MUK share allotment
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Round2018Round2021Round2022Round2023Round2023Baillie GiffordBoeing HorizonX
Rolls-RoyceBAE SystemsWoodford
Rolls-RoyceBAE SystemsWoodfordEveryone who backed them
Baillie GiffordAsset manager1round
Boeing HorizonXInvestment firm1round
BAE Systemsno record of our own yet1round
Woodfordno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Reaction Engines
How much has Reaction Engines raised?
Reaction Engines has raised $93M across 5 rounds since 2018.
When did Reaction Engines last raise?
Reaction Engines's most recent round, $148K, was in May 2023.
What was Reaction Engines's biggest round?
Reaction Engines's largest round on record is $45M, in Sept 2022.
Who backed Reaction Engines first?
Reaction Engines's first round on record, in Apr 2018, was backed by Baillie Gifford, Boeing HorizonX and Rolls-Royce and 2 others.
What stage is Reaction Engines at?
Reaction Engines's latest named round is an Undisclosed round, in Apr 2018.
Where is Reaction Engines based?
Reaction Engines is based in the United Kingdom.
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