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A British defence startup founded in September 2024 has just raised $300 million in a Series C round, valuing the company at $3.4 billion. Cambridge Aerospace is now worth more than eight times its Series A valuation from less than a year ago, making it one of the fastest-growing defence technology companies in British history.
The company, which builds low-cost interceptor systems designed to neutralise drones and missiles, has secured UK Ministry of Defence contracts, successfully tested its flagship product in Jordan, and grown its workforce to 125 people, all within 20 months of incorporation.
What Is Cambridge Aerospace?
Cambridge Aerospace is a UK defence technology company headquartered in Cambridge, England. It was incorporated in September 2024 with a focus on developing affordable air-defence systems to counter the growing threat of attack drones and low-speed missiles. The company operates at the intersection of aerospace engineering and modern warfare, where cheap commercial drones have become one of the most disruptive weapons on the contemporary battlefield.
Its flagship product, Skyhammer, is a low-cost interceptor missile designed to shoot down hostile drones and slow-moving aerial threats. The company also develops Looking Glass, a radar system intended to detect and track incoming threats at range, and is working on a second interceptor, Starhammer, due for market entry in 2027.
Skyhammer: The Product Driving the Valuation
Skyhammer is the product that put Cambridge Aerospace on the map. The interceptor is designed to engage drones and low-speed missiles at ranges exceeding 30 kilometres, flying at speeds up to 700 kilometres per hour. Crucially, it is engineered to be significantly cheaper than the threats it defeats, addressing one of the core economic problems in modern air defence: expensive interceptors being used to shoot down cheap drones.
The system has already been delivered to the UK Armed Forces under a multi-million-pound Ministry of Defence contract and was successfully tested in Jordan in May 2026. First deliveries to UK forces were completed within the agreed six-month window, with the MoD contract also covering integration, technical support, and end-user training.
The $300M Series C Round
DFJ Growth led the Series C, with participation from Lux Capital, Accel, Lakestar, Never Lift, Ora Global, and Elad Gil and Co. The round closed on 10 August 2026 and brings the startup’s total funding raised to more than $630 million since incorporation.
DFJ Growth is a notable lead investor. The firm has previously backed Anduril Industries, the American defence technology company founded by Palmer Luckey that is widely considered the benchmark for the new generation of defence-tech startups. That connection signals how seriously institutional investors view Cambridge Aerospace as a European analogue to the Anduril model.
Funding Trajectory: From Zero to $3.4 Billion
The company’s funding history is extraordinary by any measure. The company raised a $100 million Series A in summer 2025 at a valuation of approximately $400 million. Eight months later, in April 2026, it closed a $200 million Series B at $1.3 billion. The August 2026 Series C at $3.4 billion represents a further 2.6 times step-up in just four months.
In total, the company went from founding to a $3.4 billion valuation in under two years. That trajectory reflects both the quality of the technology and the urgency of the moment. Defence budgets across NATO member states are increasing rapidly in response to the threat environment in Eastern Europe, and governments are actively seeking alternatives to traditional procurement from legacy defence primes.
The Team Behind Cambridge Aerospace
The company was founded by Steven Barrett, a professor of aerospace engineering who split his time between the Massachusetts Institute of Technology and the University of Cambridge. Barrett is best known in academic circles for developing ion-propulsion aircraft, among the first heavier-than-air vehicles to fly without moving parts. He founded the company in September 2024, bringing together a team of aerospace engineers, defence technologists, and former military officials.
Chris Sylvan, a co-founder and formerly of Anduril Industries, brings direct experience building AI-powered defence hardware in a commercial environment. Junaid Hussain, another co-founder, comes from Auctor, a defence and intelligence consultancy. Grant Shapps, the former UK Secretary of State for Defence and Transport Secretary, joined as Chair of the board, lending the company significant political credibility and defence network access.
The combined team brings together academic engineering depth, Silicon Valley-style product velocity, and deep institutional relationships within the UK government and Armed Forces.
UK MOD Contracts and Government Backing
The startup has secured a multi-million-pound contract with the UK Ministry of Defence to supply “hundreds” of Skyhammer interceptors to the British Armed Forces. First deliveries under the contract were completed on time, and the company has reported no quality or delivery issues since. The contract also covers integration services, technical support, and end-user training for UK military personnel.
The UK MOD’s willingness to procure from a company that was less than a year old at the time of the first contract is notable. It reflects a broader shift in UK defence procurement policy, where the Ministry has signalled an intention to move faster and work more closely with innovative commercial suppliers rather than relying exclusively on traditional prime contractors such as BAE Systems and Thales.
The UK is also a signatory to the AUKUS partnership, which includes commitments to developing next-generation defence technologies. Its rapid procurement and deployment aligns directly with the intent of that programme, and the company is well-positioned to win further government contracts as UK defence budgets continue to expand.
Starhammer and What’s Next
The company is developing a second interceptor system, Starhammer, which is scheduled for market entry in 2027. While the company has not disclosed full technical specifications, Starhammer is understood to be designed for a different threat category than Skyhammer, likely targeting faster-moving or higher-altitude threats. The Looking Glass radar system, which It also develops, is designed to detect and track incoming threats and feeds targeting data directly into both interceptor systems.
With $300 million newly in the bank, the company plans to accelerate hiring, expand its manufacturing capability, and deepen its research and development programme. Given the pace at which it has doubled headcount to 125 employees in its first 20 months, further significant growth in 2026 and 2027 is expected. Operational testing in Jordan has already expanded the company’s international profile, and export sales to allied nations are a logical next step.
What This Means for UK Defence Tech
The company’s trajectory is a signal that the UK’s defence technology ecosystem has reached a new level of maturity. A company that did not exist 24 months ago is now valued at $3.4 billion and supplying the British Armed Forces. That is not the pace of traditional defence procurement; it is Silicon Valley product-launch speed applied to national security hardware.
The round also demonstrates that international capital is flowing into UK defence tech and deep technology sectors at meaningful scale. DFJ Growth, Lux Capital, and Accel are all US-based investors with deep technology portfolios. Their decision to lead and co-invest in a Cambridge-based defence startup reflects confidence that the UK can produce globally competitive defence products, and that the commercial and regulatory environment for doing so has become more favourable. Other UK startups building sovereign AI and defence infrastructure working in adjacent areas of defence, aerospace, and dual-use technology are likely to benefit from the visibility and credibility that its success brings to the broader sector.
Cambridge Aerospace: Key Facts
| Founded | September 2024, Cambridge, UK |
| CEO | Steven Barrett (former MIT/Cambridge professor) |
| Chair | Grant Shapps (former UK Secretary of State for Defence) |
| Co-founders | Chris Sylvan (ex-Anduril), Junaid Hussain (ex-Auctor) |
| Series C raised | $300 million |
| Series C valuation | $3.4 billion |
| Total raised | $630 million+ |
| Lead investor (Series C) | DFJ Growth |
| Other investors | Lux Capital, Accel, Lakestar, Never Lift, Ora Global, Elad Gil and Co. |
| Employees | 125 |
| Products | Skyhammer (interceptor), Starhammer (2027), Looking Glass (radar) |
| MOD contract | Multi-million-pound deal; “hundreds” of Skyhammer units to UK Armed Forces |
Frequently Asked Questions
What does Cambridge Aerospace make?
Cambridge Aerospace makes low-cost drone interceptor systems. Its flagship product, Skyhammer, is a missile that shoots down hostile drones and slow-moving aerial threats at ranges exceeding 30 kilometres. The company also develops the Looking Glass radar system and is working on a second interceptor, Starhammer, due for release in 2027.
Who are the investors behind Cambridge Aerospace?
The Series C round was led by DFJ Growth, the US venture firm that previously backed Anduril Industries. Other investors in the round include Lux Capital, Accel, Lakestar, Never Lift, Ora Global, and Elad Gil and Co. Earlier rounds included different investor combinations; total funding now exceeds $630 million.
Is Cambridge Aerospace publicly listed?
No. Cambridge Aerospace is a private company. It was incorporated in September 2024 and has raised all its funding through private venture capital rounds. There has been no announcement of plans for an initial public offering as of August 2026.
How fast has Cambridge Aerospace grown?
Exceptionally fast. The company was founded in September 2024, raised a $100 million Series A in summer 2025, a $200 million Series B at $1.3 billion in April 2026, and a $300 million Series C at $3.4 billion in August 2026. Its headcount has grown to 125 employees and it has already begun supplying the UK Ministry of Defence with operational hardware.
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Sources
Tech.eu: Cambridge Aerospace’s valuation leaps to $3.4bn as it raises $300M | Bloomberg: Anduril Backers Give Defence Startup Cambridge Aerospace $3.4 Billion Valuation | Axios: Cambridge Aerospace raises $300M
