Investing in the future security and prosperity of the UK.
The UK Government’s deep tech venture capital fund for
National Security and Defence.
What we do
Investing in our future
We invest in pioneering start-ups developing dual-use technologies with strategic relevance to National Security and Defence (NS&D) – as well as leading deep tech capital funds.
Accelerating innovation
We connect high-potential start-ups with government customers to trial and refine technologies in real-world settings - accelerating integration, shaping NS&D product roadmaps, and solving mission-critical challenges.
Delivering insight
We assess emerging technologies and market dynamics to inform strategic decisions and drive adoption across NS&D - providing actionable insight to shape future capabilities.
Impact
Our impact
40%
of our work programmes have led to technology being adopted by UK government customers
£600m
of private investment has been crowded in alongside our funding
3000
jobs directly created through our investments and programmes, with up to 70,000 supported indirectly
Discover how we delivered results for government, start-ups, and the UK economy
Latest news
View all news-
Financing Europe’s Space Defence
Ed Phillips, Investment Partner at NSSIF joined Seraphim’s Generation Space podcast to discuss how space technology is reshaping Europe’s defence and sovereignty.
19 November 2025
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Delta.g Secures £4.6 Million to Advance Quantum Sensing
University of Birmingham spin‑out Delta.g has raised £4.6 million in an oversubscribed seed round to accelerate the commercialisation of its pioneering quantum sensing technology
19 November 2025
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Championing Innovation and Partnerships
We joined leaders from government, venture capital, and start-ups to shape the future of dual-use technology at Resilience Conference 2025
19 November 2025