Centurion installs fire alarms, access control and perimeter security systems on nuclear and high-security sites. NSI Gold accredited across all four disciplines, with cleared engineers on-site.
About this sector
Nuclear facilities and high-security sites operate under some of the most stringent regulatory frameworks in the UK. Fire and security systems must meet ONR requirements and, where applicable, Centre for the Protection of National Infrastructure guidance. Any failure carries consequences far beyond a standard commercial premises.
Centurion has worked across nuclear sites, government buildings, and critical national infrastructure premises for over a decade. From perimeter intruder detection to integrated access control across multi-zone secure buildings, the work demands systems that perform without exception.
Centurion engineers working on nuclear and government sites hold Security Check (SC) clearance and are experienced working under strict site access protocols. All works are planned in coordination with site security managers, using phased delivery to avoid disruption to live operations.
Standards & Compliance
Every system we design is built to meet the statutory guidance, British Standards and sector-specific requirements your site is accountable to.
ONR
Security and safety requirements for licensed nuclear sites.
BS 5839-1
Code of practice for fire detection and alarm systems.
CPNI
Security guidance for critical national infrastructure.
BS EN 62676
High-security video surveillance applications.
ISO 9001:2015
Independently verified quality management system.
NSI Gold
Highest tier of independent security certification.
What we provide
Every system is designed around your site's compliance requirements, operational constraints and risk profile - not a generic specification.
Centurion designs and installs fire detection and alarm systems to BS 5839-1 on nuclear licensed sites and government buildings. Systems are zoned for restricted areas, specified for hazardous environments, and maintained under NSI Gold audited maintenance programmes.
LEARN MORE →IP and 4K video surveillance systems designed to BS EN 62676 for high-security applications. Perimeter coverage, analytics-driven detection and integration with access control to provide a complete picture across sensitive areas.
LEARN MORE →Multi-layer access control for nuclear and government premises, from high security access control on individual restricted zones to full estate management. Paxton Gold Partner. Integrated with CCTV and intruder detection as standard.
LEARN MORE →Monitored intruder alarm systems graded to site risk level, with perimeter intruder detection, volumetric layers, and 24/7 response. All systems installed and maintained to BS 8243 under NSI Gold certification.
LEARN MORE →Why this sector is different
All Centurion engineers assigned to nuclear licensed or critical national infrastructure sites hold Security Check (SC) clearance. We manage the vetting process and deploy only cleared personnel.
Systems on safety-critical sites are designed with redundancy at every layer - from power supplies to detection circuits. A single failed component must never compromise the life-safety function.
Full design documentation, commissioning records and maintenance logs are produced to ONR and CPNI requirements. Every stage from specification to sign-off is auditable.
Perimeter security requires CCTV, access control, intruder detection and, where specified, hostile vehicle mitigation to operate as a single integrated system. Centurion delivers this as one package.
Remote monitoring, predictive diagnostics and guaranteed response times mean sites are never left exposed. Service contracts are written around site-specific uptime requirements.
Trusted by high-security organisations
Long-term relationships with nuclear operators, government contractors and regulated industrial sites across Yorkshire and the UK.
Centurion designed and built the CCTV system used to oversee robotic equipment at Sellafield's waste silo decommissioning facility. The CCTV scope was valued at £1.5m within a £480m programme.
Centurion delivered bespoke 4K CCTV and access control for Hoyer's UK headquarters in Huddersfield - a bulk liquids site operating under strict hazardous materials compliance requirements.
Centurion delivered fire detection and CCTV across Augean's regulated waste management facility at Kirkby, meeting site safety requirements and providing security monitoring across all areas.
Common questions
We answer the questions nuclear and high-security site security and facilities managers ask us most. Can't find what you need? Call 0800 590 592.
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