Six ways to interview retail media customers without inventing a single participant

These retail media customer interviews are six possible methods, not completed sessions. Here, customer means the buyer or user of a retail-media process unless an entry explicitly concerns an affected consumer. Each route answers a different question.

Method: Included when a defined adult population could describe a recent, observable retail-media decision or task and an authoritative source supported the research or subject boundary.

Research date: 6 September 2026.

England and UK scope: Recruitment concerns a named England operation. UK and European sources keep their stated geography.

Inclusions: Retailer, advertiser, agency, platform, data, measurement, staff and adult-consumer evidence routes tied to one exchange.

Exclusions: Children, inferred vulnerability, sales calls, anonymous profiles, invented transcripts, broad shopper opinion and any claim of national representation.

Ranking: Non-ranked. Order follows the exchange from inventory to affected task.

Conflicts: The editorial team has no participant panel, supplier funding, affiliate arrangement or private interview evidence.

1. Retailer inventory decision reconstruction

Ask the person who approved or rejected the exact placement to reconstruct the last decision from a blank timeline. Probe authority, evidence received, exceptions and withdrawal. IAB UK's retail media definition supplies the retailer-controlled inventory boundary. It does not prove that the participant owns that decision, so verify their role separately.

2. Advertiser brief acceptance interview

Use a recent accepted, revised or rejected brief. Ask what information was missing before asking what the buyer prefers. The CAP Code provides current recognition and claim boundaries for relevant non-broadcast advertising. The interview cannot decide legal sufficiency.

3. Agency hand-off walkthrough

Map what the agency received, changed, approved and returned. Keep delegated action separate from retailer and advertiser authority. GOV.UK guidance on taking notes and recording research requires informed consent before notes or recording and careful handling of personal data. No client file should enter the exercise without specific permission.

4. Measurement-definition reconciliation

Ask retailer, advertiser and analyst participants separately to define served, ordered, captured, returned and retained events. IAB Europe's Commerce Media Measurement Standards V2.1 is an industry reference for sales measures and incrementality methods. Agreement in an interview is not evidence that a system implements those definitions.

5. Accessible consumer task interview

Recruit adults who are actual or likely users of the defined advert and destination, not generic shoppers. Ask what they believed was paid, what price or choice they understood and where the task stopped. The government guide to running sessions with disabled people says to address the participant directly and avoid assumptions about ability or feelings.

6. Data and access exception interview

Interview the accountable privacy or security owner about one refused tracking choice, revoked account or deleted record. The ICO's research provisions guidance is under review and is not a complete compliance guide. Use synthetic records and send unresolved privacy or security questions to the relevant specialist.

If a participant reveals an unsafe practice, personal data not approved for the session or a safeguarding concern, stop the questioning. Follow the pre-agreed escalation route and separate the incident record from research notes. The interviewer must not improvise an investigation or promise confidentiality beyond the approved information sheet.

Before fieldwork, publish the screener, invitation, question version, incentive, recording choice, access adjustments, analysis plan, retention and stop route. Report eligible, invited, responding and analysed counts separately. A theme belongs to the sample studied; it is not England prevalence.