Guidance

Forestry supply chain: check category B evidence

Timber suppliers: how to gather category B evidence to show compliance with legal and sustainable criteria in Timber Procurement Policy (TPP).

• From: Department for Environment, Food & Rural Affairs
• Published: 1 June 2013
• Last updated: 26 November 2025 — See all updates

Documents

Practical guide: category B evidence supply chain information (4th edition)

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Details

Public procurers can use this guide to:

• find out how to gather the category B evidence needed to confirm which forest (or forests) the product originates from
• help demonstrate compliance with the criteria set out in the UK government’s Timber Procurement Policy Definition of Legal and Sustainable

Published 1 June 2013

Last updated 26 November 2025 + show all updates

1. 26 November 2025

   Updated the Practical guide: Category B evidence supply chain information with the latest version (4th edition). The content has been restructured to improve readability and accessibility. This update also includes links to the new checklists for submitting Category B evidence.

2. 27 February 2025

   Defra is currently reviewing the UK government’s Timber Procurement Policy. Updates to the policy are expected to be published in summer 2025.

3. 1 June 2013

   First published.