Sitehop raises £7.5m to boost quantum-safe encryption

October 10, 2025

UK cybersecurity start-up Sitehop, based in Sheffield, has raised £7.5m in a new funding round led by Northern Gritstone.

Existing investors Amadeus Capital Partners, Manta Ray, Mercia Ventures, and NPIF – Mercia Equity Finance also joined the round, bringing Sitehop’s total funding to £13.5m.

Sitehop develops hardware-based encryption through its SAFEseries™ system, designed to protect networks from future quantum-powered cyber threats. The technology offers ultra-low latency and up to 90% lower energy use than traditional software encryption, making it ideal for demanding environments like telecoms.

Sitehop CEO Melissa Chambers said, “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, accelerating international expansion while keeping the UK at the forefront of cybersecurity innovation.”

Sitehop CTO Ben Harper added, “Our mission has always been to deliver world-class security that is ultra-low latency, hardware-enforced, and resilient against future threats like quantum computing.

“Partnering with Northern Gritstone enables us to accelerate our mission while strengthening the UK’s sovereign capability in critical network security. Their ‘profit with purpose’ ethos resonates strongly with us, creating technology that drives global growth and delivers lasting social and economic value.”