IT Defence Critical Infrastructure

Many of the environments we operate in demand the highest levels of security, compliance and operational control. Our delivery models are specifically designed to meet these requirements without slowing progress or introducing unnecessary risk. We support secure and complex estates through the delivery of robust data communications infrastructure, communications route creation and associated civils, cabinet electrical maintenance and legacy systems project work. Our teams provide flexible Smart Hands project support and are made up of security‑cleared, multi‑skilled engineers, including NSV‑cleared personnel, experienced in working within tightly controlled and regulated environments. All activity is delivered in strict accordance with client‑specific engineering standards, documentation requirements and governance frameworks, ensuring consistent, compliant and dependable outcomes across every engagement.

Our teams integrate seamlessly with existing operational processes, providing trusted, responsive onsite support in environments where reliability and accountability are critical. Ongoing operational support includes rapid break‑fix response, Smart Hands engineering, CEMs management, capacity planning and proactive audits, ensuring networks and systems continue to perform as required. By embedding experienced engineers into live operational estates, we help maintain continuity, manage change effectively and reduce risk, delivering dependable support that aligns with client governance and operational priorities.

Defence data centres require a disciplined and resilient approach to physical infrastructure, where security, reliability and performance are paramount. We support secure data centre environments with engineered solutions designed to deliver consistent performance under demanding operational conditions. Our defence infrastructure capability includes the delivery of high‑performance connectivity using fibre and copper, secure rack design and installation, and resilient rack power distribution. Through structured layouts, clear routing and disciplined installation practices, we ensure optimal airflow, accessibility and long‑term maintainability within tightly controlled and secure facilities.

These services help defence organisations adapt their infrastructure safely and efficiently as operational requirements evolve. To maintain performance and continuity, we provide responsive break‑fix support alongside controlled MACs (moves, adds and changes), enabling secure environments to be modified, repaired or reconfigured with minimal disruption. This disciplined approach ensures critical systems remain available, compliant and aligned to changing mission and operational needs.

We design and deliver the physical pathways that protect and support defence cabling and critical infrastructure, ensuring resilience, safety and long‑term integrity within secure environments. Our containment and civils works are delivered onsite by skilled, security‑cleared engineers and include containment design and installation, pit, duct and route creation, and firestopping with passive penetration sealing. Every solution is carefully engineered to align with defence safety, compliance and security standards, supporting controlled access, infrastructure protection and operational continuity.

These services help maintain clarity across defence estates, reduce infrastructure congestion and support safe, efficient future upgrades within secure environments. Through structured capacity management, detailed audits and controlled duct clearance, we help organisations understand existing infrastructure constraints, optimise available space and plan changes with confidence. This disciplined approach supports compliance, improves accessibility and ensures defence infrastructure remains resilient, well‑governed and ready to adapt as operational requirements evolve.

Mission‑critical defence systems rely on stable, safe and resilient physical environments. As part of our defence infrastructure engineering, we design and deliver racking and power infrastructure that supports both equipment performance and safe maintenance. This includes:

• Racking and enclosure design and delivery

• Earthing and electrical safety

• PDU design and installation

• UPS and power redundancy

We take a practical, engineering‑led approach to layout, access, airflow and capacity, helping reduce operational risk within sensitive environments.

These services help ensure that electrical infrastructure continues to meet operational and resilience requirements over time.

Operational continuity is supported through:

• Power management and maintenance

We design, install and certify defence-grade structured cabling systems that form the physical backbone of secure networks. Our defence infrastructure engineers deliver installations aligned to recognised standards, with a clear focus on resilience and long‑term performance.

• High-speed copper cabling

• High-speed fibre cabling

Installations are constructed onsite with disciplined routing, termination, labelling and containment, followed by comprehensive testing and certification to support assured performance in operational environments.

These services help sustain performance across existing estates, reducing risk while supporting gradual modernisation.

To ensure continuous reliability, we provide:

• Break-fix cabling services

• Legacy cabling systems support

H3: Telco Core Solutions

Reliable communications infrastructure is fundamental to defence operations. NG Bailey delivers critical telco core infrastructure that supports high‑availability networks across defence estates. This includes:

• Fibre route creation and civils infrastructure

We design and construct secure, resilient routes that consider physical protection, access controls and long‑term capacity requirements across complex environments.

Ensuring continued reliability, fast fault resolution and minimal disruption to active networks.

Operational support includes:

• Field services