Rokos Capital Management led the extended seed round, which brings the company total seed capital to £8.3m.
"Completing our seed round marks another significant step in StirlingX's growth. The confidence shown by our investors allows us to push further and faster in delivering sovereign, secure technology to partners across critical infrastructure and defence. With strong momentum behind us, we are well positioned to scale and deepen our impact across the markets we serve."
Eurazeo led the Series C financing, which will accelerate product development and international expansion.
"This new round allows us to bring forward transformational capabilities that our customers are asking for. By combining full-stack engineering with zero customer complexity, we are building advanced agentic systems powered by the industry’s richest set of real-world logistics data. This will help warehouses and supply chains shift from systems of record to true systems of action."
The funding round was led by Northern Gritstone with participation from Amadeus Capital Partners, Manta Ray, Mercia Ventures and NPIF, Mercia Equity Finance.
"Sitehop is proving the critical need for future-proof encryption, demonstrated by our early customer traction globally. As a Sheffield-founded company, this investment from Northern Gritstone supports our mission to grow and scale in the region and build world-leading sovereign encryption capability right here in the UK – meaning we can accelerate international expansion while keeping the UK at the forefront of world-class cybersecurity innovation."
The seed round was co-led by UK Innovation and Science Seed Fund and Expansion Aerospace Ventures.
"These programmes supported us from day one, helping us combine state-of-the-art research in hyperspectral remote sensing, machine learning and crop growth modelling to build something radically new – turning an ambitious idea into a commercial business with real-world impact. Now we’re ready to take this innovation global, helping farmers boost profits, cut emissions and keep soils healthy for future generations."