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Sector Defence & Security

Designed for secure environments

Architecture for defence, government and security estates

We provide architectural services for defence, security and government organisations, delivering compliant, sustainable design solutions tailored to highly regulated environments. Through close collaboration with clients, stakeholders and end users, we develop practical responses that meet operational requirements while maintaining the highest standards of quality, resilience and security.

Delivering change without disrupting operations

Working within live, complex and security-sensitive estates

Secure infrastructure must continually adapt to evolving operational demands. Our team supports the refurbishment, modernisation and reconfiguration of existing facilities, alongside space utilisation studies that help organisations optimise their estates. We have experience working within occupied buildings, constrained sites and heritage assets, carefully planning delivery to minimise disruption while maintaining operational continuity.

A collaborative, compliant approach

Trusted delivery for complex government projects

Successful projects in the defence and security sector rely on careful coordination and a thorough understanding of governance, compliance and stakeholder requirements. We work closely with clients, consultants, contractors and end users throughout the design process, delivering best-value solutions that respond to complex technical, operational and security challenges.

60 years of engagement on government projects

1962 Year OA was founded
2000+ Projects delivered across sectors
3 Studios in Oxford, Bristol and Cambridge

Core Principles

Security Designing for complex, high-security environments.
Compliance Meeting rigorous regulatory and operational standards.
Resilience Supporting facilities that must remain operational.