National Security Manager -UK‑wide
Job Introduction
We’re looking for a skilled and highly credible National Security Manager to play a critical role in protecting our people, assets and operations across the UK. This is a unique opportunity to lead proactive security, investigations and risk mitigation across a complex, nationally dispersed business.
Working closely with senior leaders and operational teams, you’ll bring independence, integrity and strong investigative capability to help prevent fraud, theft, misconduct and security breaches – ensuring our organisation continues to operate safely, ethically and securely.
About the Role
As National Security Manager, you’ll take ownership of security strategy and delivery across our UK operations. You’ll ensure robust systems, processes and controls are in place to proactively identify risk, reduce loss and protect organisational integrity.
This role combines proactive security assessments with reactive investigations and discreet surveillance activity. You’ll act as a trusted partner to leadership, HR, Legal and external agencies, providing clear, evidence‑based insight and recommendations in sensitive and high‑impact situations.
What You’ll Be Doing
In this role, you will:
Lead proactive security and risk assessments across manufacturing, distribution and quarry sites, identifying vulnerabilities in physical security, systems and processes
Design and implement security improvements, working with internal and external stakeholders to ensure recommendations are prioritised, actioned and sustained
Conduct covert surveillance operations (static, mobile and vehicle‑based) where required, ensuring full compliance with UK legislation and ethical standards
Lead independent investigations into theft, fraud, collusion, illegal activity and misconduct, including whistleblowing and hotline cases
Preserve and manage evidence, including CCTV, documentation and digital material, maintaining evidential integrity throughout
Produce clear, structured investigation reports, setting out findings, root cause analysis and recommended corrective actions
Present findings confidently to senior stakeholders and support HR disciplinary processes where appropriate
Liaise with police and external enforcement agencies when criminal activity is suspected
Oversee public risk assessments, ensuring consistent, effective and proportionate approaches across the organisationThis role involves significant national travel and occasional unsocial hours linked to surveillance or reactive deployments.
Key Competencies
You’ll bring:
Strong investigative and analytical capability with a structured, methodical approach
Covert surveillance expertise across multiple environments
High levels of integrity, discretion and emotional intelligence
The ability to manage highly confidential and sensitive information
Excellent interviewing and communication skills (PEACE model desirable)
Resilience and sound judgement under pressure
Flexibility to travel extensively and work beyond standard hours when requiredThe Ideal Candidate
You’ll be a self‑starting, credible security professional who is comfortable operating independently while building strong relationships across the business. You’ll be confident engaging with senior stakeholders, yet equally effective working at operational site level.
You’ll combine a strong moral compass with commercial awareness, balancing risk mitigation with practical, proportionate solutions. Most importantly, you’ll be trusted — to act objectively, communicate clearly and handle sensitive issues with professionalism and care.
Qualifications & Experience
Essential:
Background in law enforcement, intelligence, military policing or corporate investigations
Proven experience undertaking internal and external investigations and surveillance operations
Experience handling whistleblowing or sensitive allegations
Strong knowledge of UK criminal law relating to theft and fraud
Ability to produce high‑quality, structured investigation reports
Experience designing and maintaining security or surveillance processes and systems
Full UK driving licenceDesirable:
Experience within manufacturing, logistics, construction or building materials environments
Knowledge of GDPR, corporate governance and employment law
Experience working with police or regulatory bodies
Background in asset protection or loss prevention
Strong data analysis skills and the ability to interpret large data setsWhy Tarmac
We don't just offer a job, we offer a career.
Alongside this role, you'll have access to industry-leading rewards, development opportunities, and a culture that puts people first, including:
Bonus scheme
Enhanced holiday entitlement
Contributory pension scheme
Access to the Tarmac Reward website with discounts on retailers, holidays, etc.
Access to our Employee Assistance helpline for free and confidential advice
Access to join our Employee Communities (employee networks) we currently have nine communities inc.(REACH) Religious, Ethnic, Cultural Heritage, LGBTQ+, Parents & carers, Ability, Wellbeing, Female voice and menopause
Training and development opportunitiesTarmac is committed to being a Forces‑friendly employer. If you're coming from a military background, we'll support your transition and help you build a successful career with us.
We’re proud to be part of CRH, and even prouder to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for everyone. If you need any reasonable adjustments during the recruitment process, just let us know, we're here to support you.
Ready to build your future?
Click ‘Apply’ to get started. Please note: we sometimes close roles early due to high interest, so don’t wait too long!
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Tarmac Trading Limited