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Services

  • Environment
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  • Net Zero & Decarbonisation
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Environment

  • Arboriculture & Forestry Consultancy Services
  • Acoustics, Noise & Vibration Consultants | UK & Ireland
  • Air Quality
  • Archaeology & Heritage
  • Contaminated Land & Remediation
  • Ecology & Biodiversity
  • Environmental Impact Assessment
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  • Glint & Glare
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  • Soils & Peat
  • Waste

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GHG Verification & Assurance
Home | Services | Carbon Verification & Assurance | GHG Verification & Assurance

GHG Verification & Assurance

Trusted Carbon Assurance for ESG and Net Zero Reporting

View All Carbon Verification & Assurance Services
GHG Emissions Inventory Management

Assuring Carbon Data Integrity Aligned with the GHG Protocol

Arthian provides independent GHG verification services aligned with ISO 14064-3 and the GHG Protocol—helping organisations build trust in their carbon disclosures, meet regulatory and investor expectations, and support credible Net Zero strategies.

Why GHG Verification Matters

Verification builds confidence in emissions reporting, supports ESG disclosures, demonstrates transparency, and identifies opportunities to improve carbon accounting systems—making it essential for credible climate action.

Our GHG Verification Services

Arthian provides independent GHG verification aligned with the GHG Protocol and ISO 14064-3, helping organisations ensure accurate emissions reporting, meet ESG and regulatory requirements, and build trust in their Net Zero disclosures.

Corporate & organisational GHG inventories
Product & service carbon footprints
Project & asset-level carbon reporting
Scope 3 & value chain emissions
Pre-verification readiness review
Limited & reasonable assurance engagements
Verification for public & investor disclosures
GHG Inventory Management

Corporate & organisational GHG inventories

We verify Scope 1, 2, and relevant Scope 3 emissions in line with GHG Protocol, ISO 14064-1, SECR, CSRD, and ESG reporting frameworks. Our assurance process ensures your emissions data is accurate, credible, and ready for disclosure.


     
    Our support includes:


       

    • Verification of organisational GHG inventories across scopes
    • Review of methodologies, data sources, and documentation
    • Alignment with global standards and reporting requirements

Product & service carbon footprints

We verify cradle-to-gate and cradle-to-grave carbon footprints aligned with ISO 14067, PAS 2050, and the GHG Protocol Product Standard. This ensures your product-level emissions data is robust, transparent, and ready for reporting or claims.


     
    Our support includes:


       

    • Verification of lifecycle emissions across product and service boundaries
    • Review of data sources, methodologies, and assumptions
    • Alignment with recognised product carbon standards
GHG-Verification-Assurance

Project & asset-level carbon reporting

We provide assurance for WLCA and project-level emissions under PAS 2080, BREEAM, and funding-driven reporting requirements. This supports credible carbon reporting for infrastructure, development, and investment projects.


     
    Our support includes:


       

    • Verification of whole life carbon assessments and project emissions
    • Review of methodologies, data sources, and assumptions
    • Alignment with PAS 2080, BREEAM, and funder-specific criteria

Scope 3 & value chain emissions

We verify complex Scope 3 categories using sampling strategies and supplier engagement tools aligned with GHG Protocol guidance. This ensures your value chain emissions are credible, consistent, and ready for reporting.


     
    Our support includes:


       

    • Verification of upstream and downstream Scope 3 categories
    • Use of sampling and estimation methodologies
    • Supplier engagement and data validation tools
    • Alignment with GHG Protocol Scope 3 guidance
GHG Verification

Pre-verification readiness review

We assess data quality, system boundaries, and documentation to prepare your team for formal audit and improve internal capability. This helps ensure your GHG reporting is robust, consistent, and audit-ready.


     
    Our support includes:


       

    • Review of emissions data and calculation methodologies
    • Assessment of system boundaries and reporting scope
    • Evaluation of documentation and evidence trails
    • Advisory on audit preparation and internal improvements
Limited & reasonable assurance engagements

Limited & reasonable assurance engagements

We deliver formal verification aligned with ISO 14064-3, providing traceability, consistency checks, and assurance statements. This gives stakeholders confidence in your emissions data and supports credible ESG disclosures.


     
    Our support includes:


       

    • Execution of limited or reasonable assurance engagements
    • Verification of data traceability and calculation consistency
    • Delivery of formal assurance statements for reporting and audits
Verification for public & investor disclosures

Verification for public & investor disclosures

We issue verification statements aligned with CDP, TCFD, SECR, SFDR, and other ESG frameworks to support credible reporting. This helps build trust with stakeholders and ensures your climate disclosures meet regulatory and market expectations.


     
    Our support includes:


       

    • Verification of emissions data for investor and public reporting
    • Alignment with leading ESG and climate disclosure frameworks
    • Issuance of formal statements for transparency and assurance
GHG Inventory Management

Corporate & organisational GHG inventories

We verify Scope 1, 2, and relevant Scope 3 emissions in line with GHG Protocol, ISO 14064-1, SECR, CSRD, and ESG reporting frameworks. Our assurance process ensures your emissions data is accurate, credible, and ready for disclosure.


     
    Our support includes:


       

    • Verification of organisational GHG inventories across scopes
    • Review of methodologies, data sources, and documentation
    • Alignment with global standards and reporting requirements

Product & service carbon footprints

We verify cradle-to-gate and cradle-to-grave carbon footprints aligned with ISO 14067, PAS 2050, and the GHG Protocol Product Standard. This ensures your product-level emissions data is robust, transparent, and ready for reporting or claims.


     
    Our support includes:


       

    • Verification of lifecycle emissions across product and service boundaries
    • Review of data sources, methodologies, and assumptions
    • Alignment with recognised product carbon standards
GHG-Verification-Assurance

Project & asset-level carbon reporting

We provide assurance for WLCA and project-level emissions under PAS 2080, BREEAM, and funding-driven reporting requirements. This supports credible carbon reporting for infrastructure, development, and investment projects.


     
    Our support includes:


       

    • Verification of whole life carbon assessments and project emissions
    • Review of methodologies, data sources, and assumptions
    • Alignment with PAS 2080, BREEAM, and funder-specific criteria

Scope 3 & value chain emissions

We verify complex Scope 3 categories using sampling strategies and supplier engagement tools aligned with GHG Protocol guidance. This ensures your value chain emissions are credible, consistent, and ready for reporting.


     
    Our support includes:


       

    • Verification of upstream and downstream Scope 3 categories
    • Use of sampling and estimation methodologies
    • Supplier engagement and data validation tools
    • Alignment with GHG Protocol Scope 3 guidance
GHG Verification

Pre-verification readiness review

We assess data quality, system boundaries, and documentation to prepare your team for formal audit and improve internal capability. This helps ensure your GHG reporting is robust, consistent, and audit-ready.


     
    Our support includes:


       

    • Review of emissions data and calculation methodologies
    • Assessment of system boundaries and reporting scope
    • Evaluation of documentation and evidence trails
    • Advisory on audit preparation and internal improvements
Limited & reasonable assurance engagements

Limited & reasonable assurance engagements

We deliver formal verification aligned with ISO 14064-3, providing traceability, consistency checks, and assurance statements. This gives stakeholders confidence in your emissions data and supports credible ESG disclosures.


     
    Our support includes:


       

    • Execution of limited or reasonable assurance engagements
    • Verification of data traceability and calculation consistency
    • Delivery of formal assurance statements for reporting and audits
Verification for public & investor disclosures

Verification for public & investor disclosures

We issue verification statements aligned with CDP, TCFD, SECR, SFDR, and other ESG frameworks to support credible reporting. This helps build trust with stakeholders and ensures your climate disclosures meet regulatory and market expectations.


     
    Our support includes:


       

    • Verification of emissions data for investor and public reporting
    • Alignment with leading ESG and climate disclosure frameworks
    • Issuance of formal statements for transparency and assurance
Why Choose Arthian's Climate Transition Team?

Why Choose Arthian's Climate Transition Team?

Engineering services delivered by specialists:

Integration

Fully integrated with geotechnical, hydrological, and ecological disciplines.

Our Experience

National experience with regional insight and regulatory familiarity.

Our Understanding

Deep understanding of planning, infrastructure, and environmental interfaces.

Results Driven

Commitment to technical rigour, clear communication, and long-term outcomes.

Frequently Asked Questions

What is the GHG Protocol and ISO 14064?

The GHG Protocol is the global standard for calculating and reporting greenhouse gas emissions. ISO 14064 provides a recognised framework for verifying those emissions—ensuring consistency, transparency, and credibility.

Do I need third-party verification?

Not mandatory, but verification (e.g. ISO 14064-3) improves credibility—especially for public or investor reporting. We support pre-verification preparation or connect you with assurance partners.

What’s the difference between limited and reasonable assurance?

Limited assurance offers moderate confidence with less detailed testing. Reasonable assurance is more rigorous—similar to a financial audit—and provides a higher level of confidence.

Can you verify Scope 3 emissions and support internal teams?

Yes. We verify Scope 1, 2, and complex Scope 3 categories, and offer pre-verification reviews to strengthen internal systems and improve audit outcomes.

Get in Touch

We’d love to hear from you – whether you have a question, a project in mind, want to explore job opportunities, or just want to say hello.

Contact Us
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