Facilities management for critical environments

Mitie provides a full range of hard and soft facilities management services for critical environments, including power management, HVAC services, fire safety, security and intelligence, maintenance and engineering, and specialist cleaning.

From highly-trained personnel to state-of-the-art operations

Critical environments are spaces with zero tolerance for disruption, such as data centres, power plants and laboratories. Critical facilities management refers to the services that are required to control and maintain these environments, and are essential to continue operations, compliance and protection against threats.

Our services support critical environments to bolster workforces, identify and mitigate the latest risks or simply keep sites clean and hygienic – supporting resilience across complex estates.

Green and orange protective fabric

300,000 vehicle checks at critical sites every month

1,000+ compliance audits each month

3,000,000 pass checks a year (that’s one every five seconds)

200,000 vehicle searches annually (46% of which required Counter Terrorism search)

CCTV cameras

Protect your mission critical environments

Secure what’s important with one of the UK’s most trusted providers of critical security services. Our diverse teams are made up of thousands of expertly trained, fully-accredited and security-cleared personnel serving private and public sector clients. Our critical security teams provide everything from boots on the ground to robust risk assessments. And they’re supported by the very latest technology – including remote monitoring, advanced AI and cutting-edge intelligence that guides incident planning and protects what matters most – whether its cabling, rural locations or your base of operations.

See how our security teams protect Sellafield, home to more than 200 nuclear facilities and the world’s largest repository of untreated nuclear waste.

How can we help maintain critical environments?

How can we help maintain critical environments?

CCTV cameras

Protect your mission critical environments

Secure what’s important with one of the UK’s most trusted providers of critical security services. Our diverse teams are made up of thousands of expertly trained, fully-accredited and security-cleared personnel serving private and public sector clients. Our critical security teams provide everything from boots on the ground to robust risk assessments. And they’re supported by the very latest technology – including remote monitoring, advanced AI and cutting-edge intelligence that guides incident planning and protects what matters most – whether its cabling, rural locations or your base of operations.

See how our security teams protect Sellafield, home to more than 200 nuclear facilities and the world’s largest repository of untreated nuclear waste.

Mitie engineer in a plant room

Services in focus

Protect and maintain critical environments with end-to-end services

Whether you manage a power plant, data centre or telecoms infrastructure, we provide a full range of services to support critical infrastructures. Discover our integrated offering of intelligence, security, cleaning, workforce management and predictive maintenance.

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Frequently Asked Questions

Helpful information about Mitie’s services, solutions and technology and how we can help critical environments.

Mitie supports mission-critical sites by prioritising uptime, safety and compliance, with specialist teams and technology-led monitoring for rapid response and resilience.

Mitie is a large-scale, national service provider offering facilities management and maintenance services. Our capabilities span a wide range of sectors, with examples including:

  • Healthcare – NHS hospitals, clinical laboratories, pharmaceutical manufacturing and medical supply chains.
  • Financial services -Tier 4 data centres, secure cash processing hubs, and central bank vaults.
  • Government and defence – Command and control centres, military logistics hubs, and government estates.
  • Utilities – Nuclear power stations, water treatment facilities, and national telecommunications exchanges.
  • Transport – Air traffic control centres, rail signalling centres, port operation hubs, and high-security logistics terminals.

Mitie uses predictive maintenance, intelligence-led security and robust compliance processes to identify issues early and reduce operational risk.

Yes. Services are designed around site-specific risk, regulation and operational demands to ensure reliability and assurance.

Critical facilities are the essential systems that keep critical environments like hospitals, labs, and data centres operational 24/7. These are spaces where downtime is not an option and environmental conditions must be perfectly controlled.

The facilities needed to keep these sites online varies by sector. It typically involves complex building management systems, uninterruptible power supplies, cooling, and advanced security to protect both physical and digital assets.

At Mitie, we take an intelligence-led approach to critical facilities management. We combine technical engineering with smart technology and AI to predict failures before they happen, protecting mission-critical operations from downtime.

Our service also extends to specialised soft facilities maintenance – the day to day service provision that keeps critical environments running smoothly, from clinical-grade decontamination to security and front of house services.

Critical facilities management refers to a range of services that keep high-stakes environments operational. It involves the precise design, maintenance, auditing and protection of complex systems and spaces that keep society functioning safely.

These facilities include assets that are vital to national infrastructure, such as energy centres, electrical infrastructure and communications networks. It’s essential that these services are maintained to operate continuously, as disruption poses risk to national security, economic stability and public safety.

Mitie provides integrated facilities management for critical environments, combining engineering, security, and cleaning under a single, streamlined service provision. We ensure that mission-critical sites, from the financial institutions to major telecom hubs, operate with resilience.

Our integrated approach allows for smarter operations, where data from one service informs the performance of another. This creates a connected ecosystem that identifies risks before they lead to downtime, providing a level of oversight that siloed services cannot match.

The biggest coming challenges to critical environments in the UK include evolving threats to national security, ageing estates, changing environmental factors and the need to decarbonise while remaining continuously operational.

Mitie supports current and future readiness with predictive and preventative maintenance, real-time intelligence solutions, and carefully planned estate upgrades and phased delivery of decarbonisation programs.

Mitie supplies security cleared, fully accredited teams supported by remote monitoring, AI and intelligence led planning. This helps protect critical assets, locations and operations while adapting to evolving threats and risks.

Mitie provides dedicated on site emergency response teams that integrate with your workforce. Capabilities include fire fighting, first aid, environmental spill response and rescues at height to reduce incident impact.

Mitie uses security cleared engineers and proactive maintenance, including remote monitoring and AI enabled predictive maintenance. This helps prevent failures, extend asset life and keep critical systems operational.

Yes. Mitie helps critical environment operators decarbonise estates while maintaining compliance and operational continuity. Services support planning and delivery to meet sustainability targets without compromising uptime.

Mitie delivers cleaning and hygiene services designed for sensitive, high risk environments. This supports safety, compliance and operational assurance, helping critical sites remain protected, well maintained and audit ready.

Critical infrastructure are digital and physical systems that national security, public safety and economic stability depend on. Broad sectors include power, transport, telecommunications, data infrastructure, healthcare and water systems.

Critical environments are the specific, high-stakes spaces within those sectors where operations must never stop. Examples include hospital operating theatres, laboratory cleanrooms, and data centres. These spaces require absolute control over temperature, security, and sterile conditions.

Critical facilities are the technical systems that keep those environments running. This includes uninterruptible power supplies (UPS), cooling systems, and fire suppression. Mitie’s integrated approach manages all three levels to ensure your mission-critical operations remain resilient and compliant.

Maintaining continuous operations in a critical environment requires both hard and soft facilities management. It requires remote monitoring and responsive service to identify and fix potential disruptions before they cause downtime.

Resilience also depends on 24/7 security intelligence, rapid emergency response, and uninterruptible power supply (UPS) maintenance. These services work together to protect the site from both technical failures and external threats.

Finally, specialised soft services like clinical cleaning and hazardous waste management ensure the environment remains safe and compliant. Together, these elements allow critical facilities to function without interruption.

Mitie provides a range of facilities management services to support national critical infrastructure, including managing high-security estates for the MoD, the NHS and the nuclear sector.

Our approach to critical infrastructure lies in facilities transformation, where we modernise legacy infrastructure to meet modern security and sustainability standards. Our contracts at Sellafield and across the NHS estate demonstrate our ability to manage the UK’s most sensitive compliance requirements.

By integrating physical security with advanced technical engineering, Mitie provides the long-term resilience required for national infrastructure. Our scale and vetted workforce make us a trusted partner for maintaining the country’s essential services.

Protecting and maintaining the most sensitive environments

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Sellafield logo
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“High quality, value-for-money facilities management services are crucial to the safe and secure delivery of operations across our sites… We look forward to working with Mitie to deliver our purpose of creating a clean and safe environment for future generations.”

Mike White Head of Infrastructure, Sellafield Ltd

Meet the critical facilities management team

Gary Culloden, National Operations Director, Business Services

Gary Culloden

Managing Director, Mitie Security

Andy Rallings, Sales Director

Andy Rallings

Sales Director

Emma Shaw, Managing Director, Mitie Intelligence Services

Emma Shaw

Managing Director, Mitie Intelligence, Risk and Advisory Services

Get in touch about critical facilities services

If you want to talk to one of our experts about your critical environment needs, they’re just a couple of clicks away. Fill out the form and a member of the team will get right back to you.