We advise, build and operate bespoke technically complex information systems

 

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In today's contested and fast-evolving defence landscape, secure and reliable information systems are mission-critical. We work tirelessly to advise, build and operate bespoke, technically complex information systems which help our clients keep us all safe and secure. Whether modernising core infrastructure or supporting front-line operations, we build the platforms military personnel rely on every day.

For over 45 years, we have been a trusted partner to defence and intelligence communities across the UK and allied nations. Our sovereign capability, combined with expertise in cloud, cyber, data, systems engineering, AI and emerging technologies, enables us to design and operate systems that are resilient, scalable and ready for tomorrow's threats.

Partner with us to strengthen operational readiness, enhance cyber resilience and accelerate digital advantage across your mission domains.

 

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Our core capabilities in Defence and Intelligence

We help clients to connect systems, data and people, turning complexity into clarity and information into advantage. Our focus is on outcomes: enabling faster decisions, stronger resilience and greater operational readiness.

Defence Corporate Services

Defence Corporate Services

Front Line Commands

Front Line Commands

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Defence Intelligence

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Defence Innovation

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Defence Information Systems

Strengthening Defence and Intelligence through trusted partnerships

Working as a trusted partner, we co-create solutions that are secured by design, future-ready and shaped around the missions that matter most.

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A trusted supplier to the UK Defence domains

We work with the Ministry of Defence to advise, build and operate bespoke, technically complex mission-critical information systems. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the defence and intelligence industries, underpinned by our cyber capabilities.

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Careers in Defence and Intelligence

From back-office to front-line operations, we deliver secure systems, at scale, that our armed forces rely on. Join us and make a difference where it counts.

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Trusted alliances and SME partnerships

Our collaborative approach ensures that every innovation delivers measurable value - helping our clients stay agile, connected and prepared for what comes next. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client.

 

Supporting our Armed Forces

We’re a forces-friendly organisation

CGI is proud to uphold the Armed Forces Covenant and support the armed forces community. We recognise the contribution that service personnel both regular and reservist, veterans and military families make to our organisation, our community and to the country.

 

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Collaborating with allies. Securing shared missions

CGI delivers defence expertise across allied nations, with long-standing partnerships spanning NATO, the Five Eyes community and AUKUS.

By working in close proximity with our clients, we build the trust and understanding needed to achieve true interoperability.

 

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