National Security Strategic Investment Fund (NSSIF)

National Security Strategic Investment Fund (NSSIF) is a public investment programme in UK and allied countries, UK. The UK government's deep tech venture capital fund for national security and defence. It takes minority equity stakes, typically at seed to Series A and into early growth, in start-ups building dual-use technologies, and also invests through aligned venture capital funds.

What it offers

• “We invest directly in pioneering start-ups developing dual-use technologies with strategic relevance to National Security and Defence (NS&D) – as well as indirectly leading venture capital funds.” — nssif.gov.uk
• “We invest directly on commercial terms, taking equity-only positions through syndicated rounds.” — nssif.gov.uk
• “Every pound we invest is matched by private capital, amplifying our impact.” — nssif.gov.uk
• “We enable partnerships with government customers, which can give you a pathway to trial, test, and deploy your technology within government, and can be a significant boost for growth and credibility.” — nssif.gov.uk
• “Through our fund-of-funds programme in partnership with the British Business Bank, we invest in leading venture capital funds whose strategy and investment philosophy is strategically aligned with our portfolio goals and mission.” — nssif.gov.uk

Who can apply

• “We primarily invest in UK-based companies and those in strategically allied countries.” — nssif.gov.uk
• “We invest in companies that align with National Security priorities and demonstrate strong commercial potential.” — nssif.gov.uk
• “We usually invest as minority syndicate members and do not tend to lead rounds.” — nssif.gov.uk

Stages

Seed, Series A, Growth

How to apply

Apply or read the rules on the official site.

About this listing

TrustList compiled this listing from National Security Strategic Investment Fund (NSSIF)'s official pages in September 2026. The quotes above are its own words. Amounts, deadlines and eligibility rules change, so check the official site before you rely on them.