Cambridge Aerospace
Unicorn Β· $3.4B9 known investors
UK defence startup building low-cost interceptor missiles and solid rocket motors to counter drones and missiles.
Also known as Cambridge Aerospace Ltd
Founders & leadership
Investors Β· 9
Also in the syndicate Β· 2
Valuation Β· disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed β follow each entry's link for the claim.
Company profile
researched Aug 2026Cambridge Aerospace is a UK-based defence technology company developing low-cost air defence interceptors intended to counter aerial threats ranging from one-way attack drones (such as Iranian Shahed-style systems) to cruise and ballistic missiles. Its first product, Skyhammer, is a high-subsonic interceptor described variously as flying at Mach 0.7 with a range of about 30 km, and as having a range of 18.6 miles and a maximum speed of 435 mph; the company has said unit cost should be in the "tens of thousands" of dollars. A second product, Starhammer, is a rocket-powered interceptor aimed at higher-speed, higher-value threats, cited at Mach 2 with a range of about 10 km and planned for market in 2027; a longer-range ballistic-missile-capable variant has also been described as in development.
The company positions its systems as a European "Iron Dome" style capability, with the stated objective of reducing air defence costs by up to 90-99% relative to incumbent systems so that interceptors can be produced and fielded in large numbers. Beyond the two interceptors, Cambridge Aerospace has developed a radar system called Looking Glass and a solid rocket motor line called Nightstar, and is building an SRM production facility in Norfolk, England, intended both for internal use and eventual sale to other defence companies, addressing what the company describes as an allied shortage of sovereign SRM supply.
As of August 2026 the company reported more than 250 employees, roughly two-thirds in technical and engineering roles, and stated total funding of more than $636 million since inception in 2024, at a $3.4 billion valuation.
Founding story
Steven Barrett, a former MIT aerospace engineer who became a professor at the University of Cambridge, registered the company while still at MIT, choosing a name that would fit whether the business ended up in Cambridge, Massachusetts or Cambridge, England. Barrett has said the war in Ukraine was a major motivation for founding the company, citing the unsustainability of using million-pound missiles against inexpensive Shahed drones. He founded the company in 2024 with chief commercial officer Chris Sylvan, previously Anduril's director for Europe, the Middle East and Africa; Junaid Hussain, founder and chair of the holding company variously described as Agon and Auctor; and, per UK filings, former UK defence secretary Grant Shapps, who serves as chair.
Business model
Cambridge Aerospace designs and manufactures air defence hardware in-house on a vertically integrated basis, combining propulsion, electronics and hardware design, and sells interceptor systems to governments and allied armed forces. It also plans to sell its Nightstar solid rocket motors to other defence companies in addition to using them in its own products.
Sales of interceptor missiles and related air defence systems under government defence contracts, including agreements with the UK Ministry of Defence; planned external sales of solid rocket motors.
Traction
Skyhammer entered rapid deployment with the UK Armed Forces and Gulf partners in April 2026 and was reported successfully tested in Jordan in May 2026. The company was awarded a UK Low-Cost Air Defence Effectors contract in July 2026. Headcount grew from about 60 in September 2025 to more than 250 by August 2026. The company conducts flight tests weekly and had produced dozens of Skyhammer test articles by its public launch.
Latest developments
In August 2026 Cambridge Aerospace announced a $300 million Series C at a $3.4 billion valuation led by DFJ Growth, with proceeds earmarked for manufacturing capacity, contract delivery and continued development of its interceptor products. Starhammer is targeted for market in 2027, and the company plans continued workforce growth.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
Reported as a two-year-old UK defence tech company valued at $3.4 billion, positioned within a European air defence market that investors and governments are increasingly funding in response to drone and missile threats in Ukraine and elsewhere. It was one of three UK firms awarded contracts under the UK's Low-Cost Air Defence Effectors programme.
Emphasis on dramatically lower interceptor unit cost (targeting 90-99% reductions versus existing air defence providers), high-cadence weekly flight testing and iterative manufacturing, vertical integration across propulsion, electronics and hardware, and sovereign UK solid rocket motor production. Interceptors use a small payload and "sympathetic detonation" to trigger the target's own warhead.
Technology
Two interceptor families: Skyhammer, a high-subsonic interceptor (Mach 0.7 / 435 mph, range cited as ~30 km or 18.6 miles) for moderate-speed threats such as Shahed drones; and Starhammer, a rocket-powered Mach 2 interceptor with roughly 10 km range for high-speed, high-value threats such as cruise missiles, with a longer-range ballistic-missile variant in development. Supporting technologies include the Looking Glass radar system and the Nightstar solid rocket motor, produced at a company facility in Norfolk.
Go-to-market
Direct contracting with allied governments and defence ministries, principally the UK Ministry of Defence, with supply extended to Gulf partners and stated intent to deploy in Ukraine. Public product launch took place at the DSEI defence exhibition. The founding team includes a former UK defence secretary as chair providing strategic guidance during pursuit of initial commercial contracts.
Allied armed forces and defence ministries, including the UK Armed Forces, Gulf partner nations, and Ukraine; other defence primes are a prospective customer base for Nightstar solid rocket motors.
Geography
Headquartered in Cambridge, England, with production in Norfolk, eastern England, and operations reported in Germany, Poland, Norway, Ukraine and Australia. Entities have been incorporated in the UK, Germany and Poland.
History
Founded in 2024 and initially operating with little public visibility, the company was reported in mid-2025 to have raised around $100 million at a $400 million valuation. It began testing Skyhammer in February and publicly launched Skyhammer and Starhammer at DSEI in September 2025, when it had roughly 60 employees. At the Resilience Conference on 30 September 2025, it disclosed $136 million raised across pre-seed, seed and Series A rounds and revealed Never Lift as an investor in every round. In April 2026 the UK government announced a multi-million-pound contract for interceptor missiles for the UK armed forces and Gulf partners, and the company announced a $200 million Series B at a $1.3 billion valuation. Skyhammer was reported successfully tested in Jordan in May 2026. In July 2026 the company was named one of three UK firms awarded contracts under the Low-Cost Air Defence Effectors programme. In August 2026 it announced a $300 million Series C at a $3.4 billion valuation, bringing cumulative funding to more than $636 million.
Risks & controversies
The involvement of former UK defence secretary Grant Shapps as chair was described by one source as controversial. Scaling to the "hundreds per month" of interceptors needed for at-scale deployment was said by the CEO to likely require additional capital. At the time of its September 2025 public launch the company had no public contracts, and its weapons had been built and tested in the UK rather than combat-proven in Ukraine. Reported product specifications for Skyhammer differ between sources (Mach 0.7/~30 km versus 435 mph/18.6 miles).
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Timeline Β· 8
launches, deals, and filingsSeries C round with participation from Lux Capital, Accel, Lakestar, Never Lift, Ora Global and Elad Gil & Co.; proceeds to expand manufacturing capacity, deliver on contracts and develop new air defence systems.
$300M source β
Named one of three UK firms awarded contracts under the Low-Cost Air Defence Effectors programme, the UK contribution to the five-nation Low-Cost Effectors and Autonomous Platforms (LEAP) framework launched by the UK, France, Germany, Italy and Poland in February.
The UK government announced successful testing of Skyhammer interceptor missiles in Jordan.
Series B co-led by Elad Gil & Co. and Spark Capital.
$200M source β
Multi-million-pound contract to supply interceptor missiles to the UK armed forces and Gulf partners; Skyhammer entered rapid deployment with the UK Armed Forces and Gulf partners.
At the Resilience Conference, Cambridge Aerospace disclosed $136 million raised across pre-seed, seed and Series A rounds; Never Lift general partner Charlie March confirmed the firm participated in every round.
$136M source β
Company emerged from stealth and formally launched its first two interceptor products at the DSEI defence exhibition, with production ramp planned in the UK and Europe.
Company building an SRM facility in Norfolk, England, to produce Nightstar rocket motors for its own systems and eventually for sale to other defence companies; facility expected online at initial capacity in early 2026.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 8
primary sources listed
- Cambridge Aerospace raises $300m in Series C funding round | Aerospace Testing Internationalaerospacetestinginternational.com Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Cambridge Aerospace do?
- UK defence startup building low-cost interceptor missiles and solid rocket motors to counter drones and missiles.
- Who founded Cambridge Aerospace?
- Cambridge Aerospace was founded by Steven Barrett, Junaid Hussain, Chris Sylvan.
- Who are Cambridge Aerospace's investors?
- Cambridge Aerospace's investors include 7percent Ventures, Accel, Entropy Industrial Capital, Expeditions, Lux Capital, Spark Capital, 9Yards Capital.