• A man in military camouflage uniform and glasses works at a computer in a high-tech control room with multiple monitors displaying data and graphs.

    Defence Facilities Management Services

    Supporting defence organisations with integrated facilities management for high security environments. Our self-delivered services keep critical sites safe, compliant and operational.

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Tower Bridge over the River Thames in London at sunrise, with a moored ship in the foreground and the sun casting a golden glow across the sky and water.

Best Practice for Secure and Resilient Defence Facilities

In defence environments where security, resilience and reliability are critical, facilities must run seamlessly to support mission success. OCS provides integrated FM solutions for high-security sites, combining technical expertise with full compliance to defence standards. Using data-led insights and AI, we predict maintenance needs, optimise performance and strengthen decision-making across complex operations.

Our services protect people, assets and information, including:

High-voltage power networks, mechanical and electrical systems, and advanced building management systems across defence estates
Catering, cleaning and sustainability programmes that support secure, efficient and compliant defence environments
Secure communications infrastructure and specialist projects that protect operational continuity across defence sites

Services Calibrated for Defence Environments

Our role is to make people and places the best they can be by delivering defence FM solutions that strengthen capability, resilience and compliance in secure environments.

  • Maintenance and upgrades to critical defence infrastructure, from mechanical and electrical systems to complex high-voltage power networks, are central to OCS’s approach. Our engineering expertise supports resilience, compliance, and dependable performance across secure environments. Where deployed, intelligent monitoring and data-driven tools help strengthen these capabilities, supporting proactive maintenance, operational continuity, and long-term asset performance.

  • OCS supports defence organisations in meeting net zero commitments with practical, measurable solutions in energy efficiency, renewable technology integration, and waste reduction. AI-enabled energy management tools help optimise resource use and drive continual improvement in sustainability performance, building resilience while reducing environmental impact.

  • Our technical teams deliver complex infrastructure programmes, from secure communications systems on naval vessels to high-voltage upgrades at air bases. We bring agility and precision to projects in environments where continuous service is critical, combining specialist expertise with strict compliance to defence standards.

  • Protecting people, assets, and sensitive information is paramount in defence environments. We provide highly trained security professionals supported by advanced surveillance, access control, and threat-detection technologies. AI-enhanced systems add a layer of protection, identifying patterns and anomalies in real time to help prevent and respond to threats.

  • Reliable, compliant soft services, including catering, cleaning, and logistics, are designed to support operational readiness, well-being, and continuity across defence facilities. These services are delivered with the same emphasis on quality, resilience, and compliance as our technical solutions, providing a consistent standard across every aspect of defence facilities management.

A modern navy warship docked at a port, with a British flag at the stern and industrial cranes and other ships visible in the background under a clear blue sky.

Strengthening Naval Capability with Advanced Communications

Working with BAE Systems, we delivered the specialist design, installation, and integration of communications infrastructure for the Royal Navy’s Type 45 Destroyers. Our technical expertise ensured robust, future-ready systems capable of supporting complex naval operations.

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Purposeful ESG Supporting Defence Communities

Our commitment to the Armed Forces goes further than the workplace. Through the Armed Forces Covenant and partnerships with specialist charities, we create opportunities, provide lasting support, and ensure military families have the resources they need to thrive.

  • Armed Forces Covenant

    OCS holds the Armed Forces Covenant Silver Award, recognising commitment to supporting reservists, veterans, and their families through inclusive employment and workplace practices.

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  • A worker in green overalls uses a wrench to tighten a metal pipe fitting inside a large industrial facility with bright overhead lights.

    Forces Employment Charity

    Through the Forces Employment Charity, we help former service personnel transition into civilian careers, connecting skills gained in service with long-term opportunities.

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  • A group of children and teens, some wearing yellow “Scotty’s Little Soldiers” shirts, smile and play together indoors. Adults and other children watch in the background. The mood is cheerful and lively.

    Scotty’s Little Soldiers

    As a long-standing partner of Scotty’s Little Soldiers, we support children who have lost a parent in the Armed Forces, helping them rebuild confidence and create positive futures.

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Defence Industry Accreditations

Certifications and partnerships that demonstrate our commitment to security, resilience, compliance and best practice in high-security environments. These accreditations underpin the trust placed in OCS to operate across sensitive defence estates, giving our customers confidence that services are delivered to the highest recognised standards.

Ready to Strengthen Your Defence Facilities?

From maintaining critical infrastructure to supporting mission readiness, OCS delivers secure, compliant and resilient facilities management for defence environments.

Have a question about our defence services? View our FAQs below.

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Frequently Asked Questions

  • Defence facilities management includes the maintenance and operation of critical infrastructure, high voltage networks, mechanical and electrical systems, building management systems, secure communications, security, cleaning, catering and compliance services across military and defence estates.

  • Operational readiness depends on resilient infrastructure, planned preventative maintenance and continuous monitoring of critical assets. Facilities management reduces the risk of system failure, supports uptime and ensures defence sites remain compliant, secure and fully operational.

  • Yes. OCS supports high voltage power networks, mechanical and electrical systems, HVAC, backup power resilience and advanced building management systems across defence environments where infrastructure performance is directly linked to operational continuity.

  • Building management systems provide real time control and visibility across critical building infrastructure including HVAC, lighting, energy use and asset performance. This improves operational efficiency, compliance reporting and faster decision making across complex estates.

  • Secure communications infrastructure is essential for operational continuity and mission delivery. OCS delivers specialist design, installation and integration projects that support defence communications networks, including complex naval and high security environments.

  • Energy services improve resilience through infrastructure optimisation, energy monitoring, carbon reduction planning and reduced dependency on inefficient systems. This supports energy security, operational efficiency and long term estate sustainability.

  • Secure defence environments require controlled cleaning standards, operational hygiene and catering services that support colleagues working across high security sites. These services must be delivered with minimal disruption and full alignment to defence protocols.

  • OCS combines self delivered services with technical engineering expertise across secure and regulated environments. Our teams support defence customers through critical asset maintenance, infrastructure resilience, compliance management and specialist project delivery across complex estates.