Security threats to critical infrastructure

Critical national infrastructure (CNI) is, by its very nature, fundamental to the running of any country. Without the contribution……
g4s

Share this article:

Critical national infrastructure (CNI) is, by its very nature, fundamental to the running of any country. Without the contribution from sectors such as energy, society would be severely impacted. It should therefore be no surprise that CNI is a perfect target for those who may wish to cause major disruption or harm.

Noah Price, head of the G4S Academy, provides an overview of the security threats faced by critical national infrastructure, what makes good security and the work G4S is doing to secure Hinkley Point C.

Threats against CNI may be external or come from the inside and are constantly evolving. The principal threats include theft or damage to property, assets and materials, unauthorised entry (including terrorist, activist and urban exploration) and cyber-attacks.

The infrastructure which supports and underpins these sectors therefore needs to be protected against threat and harm, using modern methods and the latest technology, to ensure that critical operations are not disrupted should an attack occur. Such arrangements need a holistic approach to protect the entire infrastructure, including both physical and cyber security, and ensuring that culture, awareness and behaviour among staff, contractors and others, is ultimately driven from the top.

Risk management

Threats and risks faced by CNI need to be continually assessed and updated, and this is difficult because of ever-changing circumstances. In the nuclear industry, the UK is currently in a state of transition with half of our 15 nuclear power reactors (which supply approximately twenty percent of Britain’s electricity), set to be retired in the next four years. G4S provides security services to nuclear plants that are under construction or being decommissioned, with each site at very different stages of operation, displaying different risks and requiring different levels of security.

Nuclear construction sites tend to be demanding and dynamic with risks changing as the build proceeds. The number of people on site at any one time and the speed of the build, makes it more challenging to plan for. In contrast, decommissioning sites have a higher risk at the beginning of the process when reactors are shut down and fuel is taken away, meaning that security is generally easier to plan for. The tempo of operations is also much slower for decommissioning sites compared to the hive of activity of a construction site. As a result of the high number of people, machinery and activities, far more safety, security and medical incidents are faced on a construction site on a daily basis than would be seen at a decommissioning site.

Revisions of the UK threat levels relating to potential terrorist attacks also have an impact, with an expectation that security services have the ability to react to these changes instantly. This means having the resources to upscale security to the appropriate level, depending on the individual CNI environment. Having access to a pool of Suitably Qualified and Experienced Personnel (SQEP), plus a broad range of supporting services (such as canine, which can screen for explosives and firearms etc.), as well as being able to rapidly deploy surveillance technology (such as CCTV Towers), allows organisations such as G4S to effectively react to such demands and build an integrated security solution suitable to mitigate the threat.

Managing ingress and egress

The faster pace of operations is observed at nuclear construction sites by the large number of people on site at any one time. At Hinkley Point C (HPC), security staff can search and screen up to 150,000 people…

To read the full article, see our next edition of Security Buyer, which will be available to download in our library after publication here.

Media contact

Rebecca Morpeth Spayne,
Editor, Security Portfolio
Tel: +44 (0) 1622 823 922
Email: [email protected]

About Security Buyer

Security Buyer is the leading authority in global security content, delivering expert news, in-depth articles, exclusive interviews, and industry insights across print, digital, and event platforms. Published 10 times a year, the magazine is a trusted resource for professionals seeking updates and analysis on the latest developments in the security sector.

To submit an article, or for sponsorship opportunities, please contact our team below.

Rebecca Spayne Picture

Rebecca Spayne

Group Managing Editor

Georgina Turner Picture

Georgina Turner

Sales Manager

Afua Akoto Picture

Afua Akoto

Marketing Manager

Related News

Eun-Kyung-Hong_- securitybuyer.com

How AI Manages Mixed Surveillance Workloads

Eun-Kyung Hong, HDD Product Manager at Toshiba Electronics Europe GmbH discusses AI optimisation in mixed surveillance workloads
ASSA ABLOY - securitybuyer.com

ASSA ABLOY Door Group highlights importance of BS 8214:2026

ASSA ABLOY Door Group is supporting Fire Door Safety Week 2026 by raising awareness of the latest update to BS 8214:2026
OPTEX at Essen - securitybuyer.com

OPTEX to showcase perimeter solutions at Security Essen

OPTEX will present its latest perimeter and asset protection solutions at Security Essen 2026, one of Europe’s leading security trade fairs.
Dallmeier

Building Trust in Modern Video Security

Rebecca Spayne, Managing Editor of Security Buyer, speaks with Josua Braun, Chief Revenue Officer at Dallmeier electronic, about cyber resilience, trusted supply chains, the practical value of artificial intelligence and what security professionals should consider when investing in modern video technology. 
Verkada

Verkada Expands AI Security Platform

Verkada, a provider of AI-powered physical security and operations, has unveiled new capabilities for vehicle fleets, enterprise sound systems, and building operations during its annual customer conference, VerkadaOne.
Assa Abloy

“Mobile-first” access 

David Moser, of ASSA ABLOY Opening Solutions EMEIA explores how mobile digital access unlocks new possibilities for organizations everywhere.
Traka - securitybuyer.com

Integrating Digital and Physical Security

Tom Smith, Vice President and Head of EMEIA for Traka, discusses convergence and the expanding role of integrated key and asset management. 
Traka GSX

GSX Exhibitor Spotlight – Traka

Traka, an ASSA ABLOY company and the global leader in intelligent management solutions for keys and equipment, returns to GSX 2026 at Booth #1233. Traka experts will be available to provide personal demonstrations of how smart asset management systems are streamlining operations in numerous industry verticals. 
Rhombus GSX

GSX Exhibitor Spotlight – Rhombus

When it comes to modernising physical security, Rhombus stands out by making it smarter, simpler, and genuinely easier to manage; no matter the size or complexity of the business. 
Keynetics at Essen - securitybuyer.com

Keynetics to Debut at Security Essen 2026

The UK-based Keynetics will exhibit at Security Essen for the first time, showcasing SentriGuard, its smart key-management
Scroll to Top