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Innovation Funding
Verified source: British Business BankLast verified 9 Jun 2026

National Security Strategic Investment Fund (NSSIF)

The National Security Strategic Investment Fund (NSSIF) is the UK Government’s corporate venturing arm for pioneering dual-use technologies, investing in innovative start-ups with applications in both the private sector and the National Security and Defence community.

Key facts

Funding amount
Varies
Deadline
Rolling – no fixed deadline
Region
UK-wide
Business type
Startups & early-stage founders
Apply on official site

Plain English summary

The National Security Strategic Investment Fund (NSSIF) is a UK Government initiative that invests in innovative startups developing "dual-use" technologies. This means technologies with both private sector and national security/defence applications, helping these companies to scale and supporting the UK economy. It is particularly interested in AI, Quantum Technologies, Space, and Emerging Technology.

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Who this is best for

  • Startups & early-stage founders
  • Organisations based in UK-wide
  • Projects aligned with innovation funding

Who should not apply

  • Individuals applying in a personal capacity (unless explicitly permitted)
  • Established businesses trading for many years
  • Applicants who cannot meet the official eligibility criteria below

Eligibility checklist

Tick what applies to your organisation before applying.

Official source

Funding body
British Business Bank
Last verified
9 Jun 2026

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