In October 2019, the LME announced its responsible sourcing requirements following a formal market-wide consultation.
The requirements for all current and future LME-registered brands are to:
- Implement the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High Risk Areas (“OECD Guidance”) through track A, B or C
- Maintain an ISO 14001 environmental management system certification or equivalent
- Maintain an ISO 45001 / OHSAS 18001 occupational health and safety management system certification or equivalent
The first reporting deadlines for the OECD Guidance requirement begin on 30 June 2022 and all aspects of the requirements will be fully embedded by 31 Dec 2023. The content below explains the requirements and deadlines in detail, provides the documents necessary to comply, and connects you to topic-specific guidance.
If this is your first introduction to responsible sourcing and the LME, the LME recommends starting with the “Overview of LME responsible sourcing” (translations available).
If you are an LME brand producer ready to submit compliance information, please email the team.
Contact us
For further information, or to submit compliance information, please contact our Responsible Sourcing team.

Policy documents
Overview of LME responsible sourcing is an easy-to-read description of the rationale for, and requirements of, the LME's responsible sourcing rules. A short form of this document is translated into seven additional languages.
LME Policy on Responsible Sourcing of LME-Listed Brands sets out the basis on which the LME will determine whether a Brand is compliant with the LME's standards for the responsible sourcing.
Part 7 of the LME Rulebook is where the LME responsible sourcing policy is formally incorporated into the requirements for the listing of Brands .
- Overview of LME responsible sourcing (PDF)
- - Overview - Espanol (PDF)
- - Overview - Francais (PDF)
- - Overview - Italiano (PDF)
- - Overview - Português (PDF)
- - Overview - Pусский (PDF)
- - Overview - 日本語 (PDF)
- - Overview - 中文 (PDF)
- LME Policy on Responsible Sourcing of LME Listed Brands (PDF)
- Part 7 of the LME Rulebook (PDF)

Compliance documents
Brands following track B (audited LME RFA track) or track C (published LME RFA track) are required to fill out the LME Red Flag Assessment template. The document must be submitted to the LME in English, but is provided in seven additional languages for reference.
Brands sourcing solely from secondary materials for the entire duration of the reporting period are exempt from the implementation of the OECD Guidance. Instead, these Brands are required to fill out the LME secondary material sourcing attestation form.
- LME Red Flag Assessment template (PDF)
- - RFA Template - Espanol (PDF)
- - RFA Template - Francais (PDF)
- - RFA Template - Italiano (PDF)
- - RFA Template - Portugues (PDF)
- - RFA Template - Pусский (PDF)
- - RFA Template - 中文 (PDF)
- - RFA Template - 日本語 (PDF)
- LME Secondary Material sourcing attestation form (PDF)

Guidance notes and webinars
LME responsible sourcing: supplier red flags provides interpretation of the two supplier red flags described in the supplement on tin, tantalum and tungsten from the OECD Guidance.
Guidance note for LME ISO 14001 and OHSAS 18001 / ISO 45001 compliance describes the LME’s position on the migration of OHSAS 18001 to ISO 45001, the routes to achieving compliance for the ISO requirements, and the auditors and assessors that may be used.
Guidance note for track B audits sets expectations for the audit of Brands following track B (audited LME RFA track).
Watch the responsible sourcing webinar series for an in-depth discussion of the LME’s requirements.

Approved partners
The LME responsible sourcing policy refers to various partners that may support a Brand’s compliance. These entities include LME approved standards for track A, auditors, alignment assessors, and ISO equivalent certification programmes. The assurance summary table describes the different points at which an audit, assurance or assessment is required within the LME responsible sourcing requirements.
You may see the list of approved partners here.
If you would like to become an approved partner, please fill out the appropriate application form(s) available for download on the right and send them to responsiblesourcing@lme.com.

Market consultation
The LME completed a formal, market-wide consultation before setting the responsible sourcing requirements. In October 2018, the LME launched its position paper on responsible sourcing, which laid out the LME's proposed route forward for responsible sourcing in order to receive market feedback and ensure that its proposals were meaningful, balanced and fair. From April 2019 to June 2019, the LME ran a consultation on the implementation of responsible sourcing requirements. The position paper, consultation documents, and the LME’s analysis of the feedback are available for download.

The LME is also partnering with charities Pact and The Impact Facility to fund two responsible sourcing projects.
Find out more