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Audit processes

Our audit process for achieving certification, and our certification transfer process, are designed to be as straightforward as possible.

We keep the process for achieving management system certification straightforward. The stages follow a similar approach to other management system standards such as ISO 9001 and ISO 45001 which your organisation may already be familiar with. When your organisation is ready to proceed with ISO 14001 and/or ISO 50001 Certification, a dedicated client manager will guide your organisation through the relevant steps.

Audit Process


An enquiry or application for certification can be made by completing our Contact Form. We can then contact you to obtain the pertinent information about your organisation needed to accurately define your certification requirements, including audit duration. Through this we can also gather an idea of where your organisation is in terms of management system development.

Gap Analysis

This is an optional pre-assessment service where Carbon Trust and your organisation gain insight into your current management system and compare it to the requirements of ISO 14001 and/or ISO 50001.

The Gap Analysis will be conducted on site by a fully qualified Carbon Trust Assurance assessor in the same robust and impartial manner as a formal certification audit.

The Gap Analysis can be designed to meet one of two different objectives, depending on your current system status:

  • Identify where existing practices do or do not meet the requirements of ISO 14001 and/or ISO 50001, in order to inform your implementation process; or
  • Identify gaps in an ISO 14001 and/or ISO 50001-based system to determine preparedness for certification.

This helps save you time and money before your formal certification by: providing you with reassurance of your system’s current level of conformity; identifying areas of your system that need improvement; and ensuring that you implement a management system that is effective and suits your organisation.


Stage 1: Review your organisation's preparedness for full assessment.

The audit/site visit will provide:

  • Confirmation of scope of certification
  • Assessment of your management system and its conformity to the standards requirements, focusing on the system design, legal requirements, internal audits, management review and training and communication.
  • An audit report that identifies any areas of concern or opportunities for improvement and an agreed corrective action plan, if required. This will be accompanied by an audit plan and date to proceed to Stage 2.

Stage 2: Confirmation the management system in place fully conforms to the requirements of the standard.

The audit/site visit will provide:

  • Assessment of the effectiveness of the management system in meeting its objectives, including the continual improvement of performance.
  • An Audit Report containing any nonconformities or opportunities for improvement, and corrective action plans if necessary
  • A Certificate of Conformity to ISO 14001 and/or ISO 50001.

If during the Stage 2 audit, any major nonconformities are identified, certification cannot be granted until correction/corrective action is taken. If this is not completed within 6 months a further Stage 2 audit may be required.


When your organisation has passed the formal assessment your Certificate of Conformity to ISO 14001 and/or ISO 50001 will be issued and is valid for three years.

This certification is then maintained through a programme of annual surveillance audits and a recertification audit on a three-year basis. Read more on ongoing certification page for next steps.

Find out more on combining the Carbon Trust Standard and ISO 50001

Get in touch

Contact us to find out how we can help you.

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