Regulatory Compliance And Due Diligence Explained

Regulatory compliance increasingly extends beyond an organisation’s own operations.

Businesses may also need to understand how their suppliers and third parties protect data, prevent bribery, manage operational disruption, address Modern Slavery, and meet sector-specific requirements.

This makes due diligence an important part of corporate governance and compliance. It provides a structured way to gather evidence, identify potential issues, and demonstrate how supplier-related risks have been assessed and managed.

However, due diligence is not simply about completing a checklist. Organisations need to apply proportionate checks, verify the information received, act on concerns, and maintain oversight throughout the relationship.

How Does Due Diligence Support Regulatory Compliance? 

Due diligence helps organisations understand whether a supplier or third party meets the legal, regulatory, and contractual requirements relevant to its role.

It can support compliance by helping organisations:

• Identify applicable supplier-related obligations

• Verify licences, policies, controls, and certifications

• Assess risks before entering a relationship

• Apply additional scrutiny to higher-risk third parties

• Introduce appropriate contractual protections

• Record decisions and approvals

• Monitor compliance throughout the relationship

• Demonstrate how identified issues were addressed

The precise checks required will depend on the organisation’s location, industry, activities, and relationship with the third party.

Due diligence does not guarantee compliance or transfer responsibility to the supplier. It gives organisations the evidence needed to understand risks and take proportionate action.

Why Are Regulators Interested In Third Parties? 

Suppliers and third parties increasingly perform activities that are important to an organisation’s operations, customers, and regulatory responsibilities.

These external organisations may:

• Process personal or confidential information

• Operate critical systems

• Deliver regulated services

• Interact with customers or public officials

• Manufacture essential components

• Support business continuity

• Represent the organisation in other markets

A failure within one of these relationships can expose the organisation to operational disruption, data breaches, financial loss, enforcement action, and reputational damage.

Outsourcing an activity does not necessarily remove responsibility for the associated risk. Organisations must therefore understand which third parties they rely on and whether appropriate controls are in place.

Regulatory Areas Supported By Due Diligence  

 

Modern Slavery And Human Rights  

Modern Slavery due diligence helps organisations understand the risk of forced labour, exploitation, and other harmful working practices within their operations and supply chains.

Checks may include:

• Modern Slavery statements and policies

• Labour and recruitment practices

• Countries and sectors of operation

• Use of temporary or migrant labour

• Worker grievance procedures

• Supplier codes of conduct

• Oversight of subcontractors

• Processes for reporting and remediating concerns

Section 54 of the UK Modern Slavery Act requires certain commercial organisations to publish an annual statement describing the steps they have taken to address slavery and human trafficking in their business and supply chains. Current Home Office guidance also encourages organisations to understand supply-chain risks and report the actions taken to address them. UK Government guidance on transparency in supply chains

Collecting a supplier’s policy is only one part of the process. Organisations should also consider how the supplier identifies risks, implements its controls, and responds when concerns arise.

Anti-Bribery And Corruption 

Relationships with agents, consultants, distributors, suppliers, and other associated parties can expose organisations to bribery and corruption risk.

Due diligence may examine:

• Company ownership

• Beneficial owners

• Directors and senior leaders

• Conflicts of interest

• Links to public officials

• Countries and sectors of operation

• Anti-bribery policies

• Gifts, hospitality, and payment controls

• Previous investigations or enforcement

• Use of intermediaries and subcontractors

UK government guidance supporting the Bribery Act identifies due diligence as one of six principles that organisations should consider when developing procedures to prevent bribery. It also emphasises proportionality, meaning the depth of checks should reflect the nature and level of risk. UK Government Bribery Act guidance

Higher-risk relationships may require enhanced ownership checks, specialist screening, additional contractual controls, or senior approval.

Data Protection And Privacy 

Organisations need to understand how suppliers and third parties will access, process, store, share, and delete personal information.

Data protection due diligence may assess:

• The types of data being processed

• The purpose and duration of processing

• Data storage locations

• Security measures

• Access controls

• International data transfers

• Retention and deletion arrangements

• Use of subprocessors

• Data breach procedures

• Relevant privacy policies and training

ICO guidance states that controllers should only use processors that provide sufficient guarantees that appropriate measures are in place. It also makes clear that oversight should continue after the processor is selected. ICO guidance on using processors

Due diligence findings should be reflected in appropriate contractual terms, instructions, audit rights, incident notification requirements, and ongoing monitoring.

Cybersecurity 

Cybersecurity due diligence helps organisations assess whether third parties can protect the systems, networks, and information they access.

Checks may cover:

• Information security governance

• Access controls and authentication

• Data encryption

• Vulnerability and patch management

• Security testing

• Relevant certifications

• Employee security training

• Previous cyber incidents

• Incident response arrangements

• Controls applied to subcontractors

Cybersecurity risk can change quickly. Assessments should therefore be refreshed when access changes, new vulnerabilities emerge, incidents occur, or the relationship becomes more critical.

Operational Resilience And Outsourcing 

Organisations in regulated sectors may be expected to understand the third parties supporting important or critical services.

Due diligence may consider:

• Service criticality

• Operational capacity

• Business continuity

• Disaster recovery

• Recovery timescales

• Geographic concentration

• Subcontractor dependencies

• Incident management

• Data access and security

• Exit and transition arrangements

In financial services, for example, regulatory frameworks address outsourcing and third-party risk management, including the need for appropriate assessment, governance, monitoring, and contingency planning. Relevant requirements will depend on the organisation, activity, and jurisdiction.

The purpose of due diligence is to understand whether the third party can deliver the service reliably and whether the organisation can continue operating if the relationship is disrupted.

Sanctions And Financial Crime 

Organisations may need to screen suppliers, agents, partners, and beneficial owners for sanctions and wider financial crime risks.

Checks may include:

• Sanctions lists

• Beneficial ownership

• Politically exposed persons

• Adverse media

• Geographic exposure

• Source of funds where relevant

• Unusual payment arrangements

• Previous investigations

• Links to restricted organisations or individuals

Screening should not be treated as a one-off activity. Sanctions status, ownership, and political exposure can change throughout a relationship.

Higher-risk findings should be reviewed by appropriately qualified teams before the relationship proceeds.

ESG And Sustainability Reporting 

Depending on their size, sector, and jurisdiction, organisations may need supplier information to support environmental and social reporting or wider sustainability obligations.

Due diligence may gather evidence relating to:

• Carbon emissions

• Environmental policies

• Energy and resource use

• Waste management

• Labour standards

• Human rights

• Health and safety

• Diversity and inclusion

• Governance and accountability

Reliable supplier information is especially important where reported performance depends on data collected from across the value chain.

Organisations should define what evidence is required, how it will be verified, and how differences in supplier size and capability will be treated proportionately.

The Role Of Due Diligence In A Compliance Programme 

Due diligence turns regulatory requirements into a practical process for assessing and managing supplier risk.

A consistent approach should include:

• Define the requirements: Understand what the third party will do, which regulations apply, and whether it will access sensitive data, support critical services, or use subcontractors.

• Apply proportionate checks: Focus greater scrutiny on relationships that create higher regulatory, operational, or reputational exposure.

• Validate the evidence: Review relevant policies, licences, certifications, ownership details, and supporting documents for accuracy, validity, and scope.

• Address and record concerns: Agree remediation or additional controls, escalate significant risks, and document the evidence reviewed, decisions made, and any exceptions accepted.

• Maintain ongoing oversight: Reflect requirements in the contract and review the relationship when information, regulations, services, or risk levels change.

This creates a clear and defensible record that appropriate checks have been completed and identified risks are being actively managed.

Common Regulatory Due Diligence Mistakes

Common weaknesses include:

• Treating due diligence as a one-off onboarding exercise

• Applying the same checks to every supplier

• Collecting policies without reviewing them

• Accepting unsupported self-declarations

• Failing to verify ownership information

• Keeping regulatory reviews separate from procurement

• Not tracking remediation actions

• Failing to update contracts after identifying risks

• Relying on outdated supplier information

• Maintaining incomplete decision records

A completed questionnaire is not evidence that regulatory risk has been effectively managed. The information must be validated, assessed, acted upon, and kept current.

How Shared Assurance Supports Regulatory Compliance 

Organisations operating within the same industry often need similar information from the same suppliers.

Collecting this evidence independently creates duplicated work and can result in different versions of supplier information across buying organisations and internal teams.

Shared assurance creates a common evidence base by collecting, validating, and maintaining supplier information once.

This can help organisations:

• Align common assurance requirements

• Reduce repeated supplier questionnaires

• Improve evidence quality and consistency

• Keep supplier information current

• Give multiple teams access to the same data

• Support more efficient audits and reviews

• Respond collectively as regulatory expectations evolve

Each organisation retains responsibility for interpreting applicable requirements and making its own risk decisions. Shared assurance makes the information needed to support those decisions easier to obtain and maintain.

Key Takeaway: Due Diligence Turns Regulatory Expectations Into Evidence 

Regulatory compliance requires more than knowing which rules apply. Organisations need evidence that supplier and third-party risks have been identified, assessed, and managed appropriately.

Effective due diligence provides that structure.

By applying proportionate checks, validating supplier information, documenting decisions, embedding controls into contracts, and monitoring change, organisations can strengthen governance and respond to regulatory scrutiny with greater confidence.