Born in defence.
Growing beyond.

The pre-seed venture fund backing dual-use deep tech
Early-stage investor backing pre Series A founders developing foundational deep tech that strengthens NATO & Allies and scales across multiple markets.

Led by Nicola Sinclair, Europe's only solo GP with a track record in the business of defence. The fund helps founders ‘twin track’ commercialisation: turning defence traction into commercial scale.

Twin Track to growth

Founders choose twin track for:

  • Trusted NATO aligned capital
  • A guide through the defence ecosystem, with warm introductions to customers
  • A focus on multi-market commercialisation
Our approach is built on decades of experience across defence operations, startup procurement, and investment.

What we invest in

We back foundational deep tech that strengthens NATO & Allies. We specialise in dual-use technology that addresses defence capability gaps and scales across commercial markets.

Compute

Enabling autonomy and decision advantage

COMMUNICATIONS

Resilient networks for contested environments

SENSORS

Advanced perception and awareness

SUPPLY CHAIN

Materials, manufacturing, and energy

Portfolio

Nicola Sinclair

Founder and solo GP

Nicola Sinclair is the Founder and solo General Partner of Twin Track Ventures, a London-based venture capital fund accelerating growth for dual-use deep tech founders, turning defence traction into commercial scale. She focuses on pre Series A startups developing foundational deep tech that can strengthen NATO & Allies and scale across multiple markets. Europe’s only solo GP with a track record in the business of defence,

Nicola has a sharp insight into the defence market and how to use it as an accelerant for commercialisation. Nicola started her career in the early 2000s at the Royal Air Force, where she worked in operational roles for two decades, acting in international projects and serving in the British delegation in the NATO headquarters. In 2018, she founded the Air Innovation Fund, helping over 20 Pre-Seed and Seed deeptech companies secure defence contracts in the UK and the US. She authors the annual Working with Defence and Security Report, and is a member of the European Defence Investors Network.

Backed by