Assessment & Certification

The Woodland Carbon Code insists on high standards of woodland creation and management. These demanding standards are essential to ensure emissions are accurately matched against offsets and we all benefit from properly created woodlands.

High Standards of Woodland Creation are Essential

In order to safeguard the quality of the woodlands registered under the Woodland Carbon Code, to guarantee the credibility of WCUs, and to protect the value of the PIUs and the WCUs, landowners must follow strictly a series of  processes in order to generate WCUs from their woodlands.

Previous sections have already provided some explanation of the process for registering, validating and verifying woodlands under the Code. Steps 1 to 3 (see below) offer more details but, if you have any further questions, we would gladly help answer them.

High Standards of Woodland Creation are Essential

Healthy woodlands do not just sequester larger volume of carbon dioxide. They provide the best haven for wildlife and the most enjoyable setting for us to exercise or relax.

All woodlands registered in the Woodland Carbon Code must be managed according to UK Forestry Standards and follow a clear system of standards, checks and audits.

CarbonStore and Tilhill, with our knowledge of the Woodland Carbon Code and our extensive experience in woodland creation, are ideally placed to help meet these standards and checks.

Rules, Compliance & Eligibility



  • You create an account on the Woodland Carbon Code’s Markit Registry.
  • You submit basic details about the scheme e.g. its size, location and species.
  • You also submit some basic contact details for yourself or your company.
  • Registration must be completed no more than 2 years before starting planting.


  • This occurs soon after planting, involving an onsite inspection by an independent third party.
  • You submit a Project Design Document outlining detailed information about the project.
  • The PDD also includes a long-term management plan, project maps and planting details.
  • Once a scheme has been validated, your PIUs are available to be sold.


  • This involves an onsite inspection by an independent auditor.
  • The auditor verifies that the trees have grown as expected and carbon dioxide has been sequestered.
  • This inspection allows a portion of the PIUs to be commuted into WCUs.
  • The first verification occurs 5 years after planting. Thereafter, they occur every 10 years.

Enquire about a Project

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01786 649387

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Pending Issuance Unit: A promise to deliver a Woodland Carbon Unit during a given period, based on the trees’ predicted growth Woodland Carbon Unit: A ton of carbon dioxide which has been sequestered in a scheme verified under the Woodland Carbon Code