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Assurance & certification

We help organisations adopt more sustainable, low carbon operational models by measuring and certifying their resource footprints. 


Secure the independent verification of your environmental data that shareholders, stakeholders and customers are increasingly demanding.

As a mission-driven organisation, we provide indispensable third-party assurance services to global leaders in sustainability.

Working in line with recognised international standards and setting best practice methodologies through our Carbon Trust Standards, we provide Assurance statements that verify environmental claims for global sustainability leaders.

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Find out how our assurance and certification services can help your organisation.

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Carbon Trust Assurance

Our assurance services can benefit your business in a number of ways. We can help you:

  • Build credibility with customers, stakeholders and shareholders by having confidence in your environmental data
  • Make better decisions based on accurate data
  • Avoid being labelled as ‘greenwash’
  • Test internal systems - Assurance effectively tests your internal mechanisms to ensure you are monitoring, quantifying and reporting your environmental data accurately
  • Identify cost reductions and efficiency gains – our assurance have reduced carbon emissions by over 3.6Mt CO2e every year, with an average annual energy cost saving of £322,000.
Working with the Carbon Trust we knew we would be getting support from some of the world’s top experts on emissions measurement, with a reputation for excellence that our clients could rely on. But we were impressed by the practical insight we also got into strengthening our internal processes and finding the commercial value in taking action on sustainability.

Frank Clary, Vice President, Corporate Social Responsibility, Agility

Carbon Trust Certification

Our certifications help organisations to measure what matters, identify opportunities and drive year-on-year improvements. Having developed the world’s first certification for organisational CO2e - the Carbon Trust Standard – and product carbon footprints, the Carbon Trust is the leading footprint certification body for carbon, water and waste.

Certification pinpoints resource consumption and helps improve operational efficiency at the product, organisational or supply chain levels:

Carbon Trust Standards diagram

Organisational Standards

Improve energy efficiency and cut costs across your business with the Carbon Trust Standards. A proven best practice approach adopted by leading international organisations, the Standards provide a year-on-year framework to help measure and manage environmental impacts.

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Verification and assurance

Carbon Trust verification services provide the assurance necessary for organisations to report environmental data with confidence, offering the credibility and accuracy necessary to satisfy stakeholder, employee and customer expectations.

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Carbon Trust Footprint Label

Product Footprinting Certification

Having a certified product footprint allows you to differentiate your product and brand, widen your product’s distribution and increase sales.

We are the world’s leading independent certification body for product footprints and accredited by UKAS to certify footprints to PAS 2050. We also provide PAS 2060 Carbon Neutral Certification

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Carbon Trust Standard for Supply Chain

Supply Chain Efficiency Standards

The Carbon Trust Standard for Supply Chain rewards organisations that take a targeted approach to their supply chain CO2e emissions by identifying and engaging with suppliers to identify, measure and manage emission hotspots with a view to achieving year-on-year reductions.

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Climate Finance

The Carbon Trust verifies and certifies the environmental credentials of green bonds, helping organisations finance for low-carbon initiatives.

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Sustainability leaders

Over 1,100 organisations have certified with the Carbon Trust including;

standard bearers logosv2
As a global healthcare company our mission is to help people do more, feel better and live longer. Our efforts to take action on climate change and water scarcity are a key part of this. Our work on a range of projects with the Carbon Trust over many years has really helped shape our approach and targets. With the Carbon Trust Standard we have been able to robustly track our own progress in reaching our goals, and been able to communicate our achievements with the credibility provided by independent assurance.

Dr Paul Barnett, Head of Environmental Sustainability, GSK

Get in touch

Find out how our assurance and certification services can help your organisation.


Contact us

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