Brands & trade names · GDPR

Brands & retail chains — GDPR: managing data across a network

Network brands share customer data between the network head and points of sale. GDPR requires clarifying roles, formalising joint controllership and harmonising compliance. This guide details this architecture and a tailored roadmap.

DPO / CISO team — Data Comply One Updated on 15 June 2026

In brief

  • Regulation: GDPR.
  • Network heads, franchisees, branches and partners sharing customer data are all concerned.
  • Map data flows.
  • Clarifying roles.
  • Formalising joint liability.
  • Fines of up to €20M or 4% of global turnover.

Regulatory deadlines

The key dates of this regulation.

May 2018

Entry into application

In force

What does GDPR cover?

When several parties jointly determine the purposes and means of processing (shared CRM, network loyalty programme), they are joint controllers and must formalise an arrangement allocating their respective obligations and the exercise of individuals' rights. Processing activities specific to a single point of sale make that entity a separate controller.

Data flows within the network must be secured and documented.

Is the 'Brands & Retail Chains' sector concerned?

Network heads, franchisees, branches and partners sharing customer data are all in scope. Shared service providers (CRM, loyalty programmes) are processors.

Global brands additionally manage international data transfers.

Detailed obligations

Map data flows

Map data flows between the head network and points of sale.

Clarify roles

Qualify controller, joint controller, and processor for each processing activity.

Formalising joint responsibility

Draft the agreement distributing obligations and rights management.

Harmonise

Standardising information, consent and retention periods across the network.

Frame transfers

Secure international transfers through appropriate safeguards.

Sanctions & risks

Fines of up to €20M or 4% of global turnover. An informal joint liability exposes the entire network.

Common mistakes in the sector

  • 1Undefined roles. Leaving the head-of-network/franchisee split undefined.
  • 2Missing Agreement. Failing to formalise joint controllership.
  • 3Heterogeneous information. Inconsistent practices across points of sale.
  • 4Ungoverned transfers. Transferring outside the EU without safeguards.

Practical case

A retail brand was sharing a common CRM without a joint controllership agreement or consistent data subject information. Remediation formalises the agreement, clarifies roles, harmonises information and consent, and governs transfers to the parent company abroad.

Compliance roadmap

  1. 1

    Map. Mapping network flows.

  2. 2

    Qualify. Define roles.

  3. 3

    Formalise. Joint controllership agreement.

  4. 4

    Harmonise. Information and consent.

  5. 5

    Transfers. Governing international transfers.

Frequently asked questions

Yes for processing activities where the network head and points of sale decide jointly.

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