A Gloucestershire cyber company has merged with an Australian-based digital security firm.

Amiosec, based in Tewkesbury, and Penten, based in Canberra, have combined to create PentenAmio, a £60m turnover business.

PentenAmio is a leading global provider of secure mobile communications as well as AI enabled cyber defence and electronic deception technologies.

PentenAmio has approximately 300 security-cleared professionals, sovereign facilities in both Australia and the UK, and a growing customer base across Allied nations. This makes the new company one of the largest and most advanced teams globally dedicated to secure classified mobile communications and AI enabled defence for government and military organisations.

The company delivers deeply embedded, end-to-end proprietary digital security technology that safeguards the most sensitive information and enables active defence against sophisticated threats.

The combined business will generate more than £60 million in annual revenue, with high growth rates and strong gross profit and EBITDA margins. This positions PentenAmio to invest further in R&D, talent, and global reach — and to take a sustained leadership role in global security innovation.

Adrian Cunningham, executive co-chair of PentenAmio, said: "This merger will help us provide our customers with the agility and innovation which they need, wherever they are in the world. By joining forces we give ourselves, our nations and their allies access to an unrivalled breadth and depth of expertise across secure communications and beyond."

Matthew Wilson and Adrian Cunningham, who are among the founders of Penten and Amiosec respectively, will serve as executive co-chairs of the merged business.

Sarah Bailey, previously CFO at Penten, has been appointed CEO of PentenAmio Australia, and Matt Thomas has been newly appointed CEO of PentenAmio UK, joining the team from NCC Group. Both appointments are effective immediately.

Matt Thomas, who joins the new firm following a distinguished career in defence and cyber security, said: "I'm delighted to be joining PentenAmio. I've long been impressed by their work here in the UK and in Australia, and it's an honour to be helping join up two of the world's leading secure communications powers.

"Homegrown expertise in secure communications has never been more important to the UK, and I look forward to working with our security services and those of our allies to help meet their goals and protect all of us."

Greg Barsby, the previous CEO of Penten, has decided that the timing is right for him to step down to coincide with the completion of the merger. The firm is pleased that Greg has agreed to continue to support PentenAmio as a strategic adviser.

Sarah Bailey said: "This is a strategic union of two high-performing businesses with shared values and complementary technologies. We are now uniquely positioned to deliver the future of secure mobility and cyber defence — at speed, at scale, and with sovereign assurance."

Matthew Wilson, executive co-chair, said: "This is a moment of global inflection. Rising geopolitical tension and increasing digital threats demand transformative technology responses. PentenAmio is purpose-built to meet this demand leveraging scalable, sovereign deep tech solutions."

Recent incidents highlighting the risks of consumer messaging apps in government settings have underscored the urgent need for sovereign, secure-by-design platforms.

Matthew added: "We've built our technologies not just on convenience, but on control, assurance, and mission readiness. PentenAmio is helping governments move beyond compromise — ensuring that classified work stays protected, mobile, and sovereign."

The merger represents a significant investment in the combined business by existing shareholders, reflecting their long-term commitment to growth and capability development. PentenAmio is privately held, founder-influenced, and backed by Five V Capital, which remains a minority shareholder.

PentenAmio will be actively evaluating opportunities for strategic partnerships and market entry across NATO and other Five Eyes aligned countries.