National Security Strategic Investment Fund

National Security Strategic Investment Fund is an investment firm.

Active

Updated: Mar 15, 2026 ·

About

The National Security Strategic Investment Fund (NSSIF) operates as the UK Government's dedicated deep tech venture capital fund. Its primary mandate is to support innovation within the National Security and Defence sectors. NSSIF strategically invests in companies developing advanced technologies that hold relevance for both national security applications and broader commercial markets.

Functioning as a corporate venturing arm, NSSIF targets dual-use technologies. This approach aims to bolster the UK's strategic capabilities by fostering a robust ecosystem of technology companies critical to national interests. Based in London, NSSIF plays a role in connecting promising ventures with the resources needed to scale their impact.

Financial History

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Investments Made

Date	Company	Round	Lead Investor(s)	Co-Investor(s)
Feb 3, 2026	Refute	$6.8M Seed	Amadeus Capital Partners	Episode 1, Osney Capital, Playfair Capital

Financial History

Total Raised

N/A

Valuation

N/A

Deep Dive

The National Security Strategic Investment Fund (NSSIF) is established as the UK Government's deep tech venture capital fund, specifically designed to address the evolving technological needs of National Security and Defence. Its core mission involves identifying and investing in innovative companies that are developing cutting-edge technologies with the potential for significant impact in these critical domains. This strategic initiative underscores the government's commitment to maintaining a technological edge and fostering domestic capabilities.

NSSIF's investment thesis centers on dual-use advanced technologies. This means the fund seeks out ventures whose innovations can serve both the specialized requirements of national security and defence agencies, as well as broader commercial applications. By supporting companies with this dual-market potential, NSSIF aims to accelerate the development and adoption of technologies that strengthen national resilience while also contributing to economic growth.

As a corporate venturing arm, NSSIF provides capital and strategic support to early-stage and growth-stage companies. Its involvement extends beyond mere financial investment, often including guidance to help portfolio companies navigate the complexities of both government procurement and commercial market entry. This hands-on approach is intended to maximize the success rate of ventures operating in sensitive and high-stakes technological areas.

Operating from its headquarters in London, NSSIF is an integral part of the UK's venture ecosystem. It collaborates with various stakeholders across the public and private sectors to identify promising technologies and facilitate their development. The fund's activities are crucial for ensuring that the UK remains at the forefront of technological innovation relevant to its national security interests, fostering a pipeline of advanced capabilities for the future.

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Frequently Asked Questions

What type of technologies does the National Security Strategic Investment Fund primarily target for investment?

NSSIF primarily invests in deep tech and dual-use advanced technologies that have applications for both national security and defence, as well as broader commercial markets.

What is the strategic purpose behind the UK Government's establishment of NSSIF?

The fund was established by the UK Government to bolster national security and defence capabilities by fostering innovation and supporting companies developing critical technologies in these sectors.

In what capacity does NSSIF operate within the venture capital landscape?

NSSIF functions as a corporate venturing arm, providing strategic investment and support to companies whose technologies align with the UK's national security interests.