Internal audits are a fundamental part of ISO-certified management systems. They help businesses check that their systems are effective, compliant, and aligned with ISO requirements.
By carrying out internal audits, organisations gain assurance that their processes are functioning as intended and capable of supporting business objectives. This builds resilience, readiness for external certification, and demonstrates a commitment to continual improvement.
What’s Involved in an Internal Audit
A typical internal audit process includes four key stages:
Internal auditors must remain impartial. They cannot audit their own work or areas where they have direct involvement. This independence ensures the audit findings are reliable and objective.
The Role of Internal Audits in Certification
Internal audits are not optional – they are a mandatory requirement of ISO management system standards. Beyond compliance, they act as a vital feedback loop: helping organisations uncover weaknesses, drive corrective action, and demonstrate ongoing alignment with ISO expectations. This process not only supports successful certification but also strengthens long-term system performance.
Areas Commonly Reviewed in Internal Audits
The focus of an internal audit depends on the ISO standard being applied. Examples of areas commonly reviewed include:
- ISO 9001 (Quality Management): Leadership commitment, resource management, and processes for products and services.
- ISO 14001 (Environmental Management): Compliance obligations, environmental performance data, and operational controls.
- ISO 27001 (Information Security): Risk assessments, security controls, and monitoring procedures.
- ISO 45001 (Occupational Health and Safety): Hazard identification, incident response, and worker participation.
- ISO 22301 (Business Continuity): Continuity planning, testing, and leadership involvement.
While each standard has its own focus, the purpose remains the same: to confirm that the management system is being effectively implemented and maintained.
Build Your Internal Audit Skills
To support organisations in developing internal audit competence, British Assessment Bureau offers structured training aligned with ISO requirements:
- Internal Auditor Training: build the knowledge and skills to conduct impartial internal audits.
- Lead Auditor Training: develop advanced knowledge to plan, manage, and report on audits effectively.
Explore more of our helpful training courses for you and your colleagues.
