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Services – Risk Identification

Supply Chain Due Diligence

TDi Sustainability helps companies identify, assess and manage due diligence risk across complex global supply chains – grounded in the OECD Due Diligence Guidance for Responsible Supply Chains and applied through more than two decades of on-the-ground assessment work across minerals, metals and beyond.

What supply chain due diligence means in practice

Supply chain due diligence doesn’t mean a single audit, but an ongoing system. The OECD Due Diligence Guidance for Responsible Supply Chains – the framework most global regulation and industry standards now build on – sets out five steps, which when implemented properly becomes a continuous cycle – rather than a box ticking exercise once a year.

 

Find out about the Due Diligence Essentials series that TDi authored for the OECD.

The OECD five-step framework

  • Establishing strong company management systems
  • Identifying and assessing risk in the supply chain
  • Designing and implementing a response to that risk
  • Carrying out independent third party verification
  • Reporting on due diligence performance

 

What TDi does

TDi Sustainability helps companies build and run t his cycle in practice.

  • We map supply chains to identify where risk sits
  • Develop supplier codes of conduct that set clear expectations
  • Design corrective action plans when a supplier falls short

Our Supply Chain and Due Diligence Tool, part of the TDi Digital Platform, provides a digital backbone for this system. It scores suppliers for inherent and residual risk and flags when enhanced due diligence is needed – enabling the process to run continuously and automatically

Due diligence looks different by sector

This page is the general entry point to TDi’s due diligence services.

If your due diligence challenge is specific to critical minerals, visit our critical minerals due diligence hub for standards, credentials and sector-specific detail.

If your focus is mining more broadly, including community relations and social license to operate – visit our mining section. 

Spot Market Due Diligence

Spot-market procurement differs fundamentally from long-term sourcing models and therefore require a distinct approach. In these transactions, the buyer typically procures already-produced material held by a trader, outside stable contractual arrangements with mining companies, processors or manufacturers. Conventional due diligence tools used in long-term sourcing models, such as supplier questionnaires, on-site assessments, audits or corrective action plans are often not applicable in this context. Although spot-market transactions present structural constraints, the EU Batteries Regulation still requires economic operators to apply risk-based due diligence.

TDi has developed a structured, practical and defensible decision methodology that enables the buyer to demonstrate adequate due diligence under conditions of:

  • Limited leverage
  • Incomplete information
  • Time-sensitive purchasing conditions
  • Transaction-level rather than relationship-level engagement

The underlying premise of this methodology is that compliance in spot-market settings must rely on proportionate measures and documented reasoning, rather than on full upstream verification.

Get in touch to find out how we can support your business with its spot market due diligence requirements.

 

Due Diligence Made Simple through the TDi Digital Platform

The Supply Chain and Due Diligence Tool

  • Understand the ESG and supply risks associated with your mineral value chains
  • Score your suppliers for inherent and residual risk, depending on how structural risks have been mitigated (i.e. through third-party certification)
  • Determine when to conduct enhanced due diligence (i.e. on-site audit, desktop research, supplier questionnaire) depending on pre-defined risk thresholds.
  • Assess the ESG and due diligence performance of your suppliers and counterparts through audits, and monitor continuous improvement through corrective action plans
  • View your supply chain linkages and suppliers’ location, either as a geographic map or in flow-chart format
  • Rate your supply chain visibility level, based on the accuracy and completeness of sourcing information available
Find out more
Reporting-ready supply chain and business relationship statistics
Reporting-ready supply chain and business relationship statistics

Frequently Asked Questions

Supply Chain Due Diligence

What is supply chain due diligence?

Supply chain due diligence is the ongoing process of identifying, assessing and managing environmental, social and governance risks across your supply chain – not a one-off check. Most current regulation and voluntary standards build on the OECD’s five-step framework:
  1. Establishing strong company management systems
  2. Identifying and assessing risk in the supply chain
  3. Designing and implementing a response to that risk
  4. Carrying out independent third-party verification
  5. Reporting on due diligence performance.

Does TDi offer due diligence software as well as consultancy?

Yes. Our Supply Chain & Due Diligence Tool, part of the TDi Digital Platform, lets you map your supply chain, score suppliers for risk, and manage due diligence continuously rather than as a periodic exercise. It’s designed to work alongside our advisory services, not as a replacement for them – the tool flags what needs attention; our team helps you act on it.

What is the OECD Due Diligence Guidance?

It’s the internationally recognised framework for due diligence in mineral and metal supply chains, originally developed to address conflict and high-risk sourcing of tin, tantalum, tungsten and gold, and now applied more broadly across critical minerals and other commodities. TDi has been directly involved in its roll-out and application across all OECD-regulated and emerging priority supply chains.

Is due diligence for critical minerals different rom general supply chain due diligence?

The underlying framework is the same, but critical minerals carry specific risks – geographic concentration in a small number of producing countries, overlap with artisanal and small-scale mining, and a fast-changing regulatory landscape (including for example, the CSDDD and the EU Battery Regulation).
See our critical minerals hub for standards and credentials specific to this sector.

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Whatever your due diligence requirements, we have a simple solution. Our experts can help you map your supply chain risk, create a tailor-made toolkit or plan to suit your needs, or show you one of our existing solutions.
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