Writing a factual mystery shopping report and keeping evidence

Prepare your observation plan before the visit

Read the questionnaire before leaving so that you know which details matter. Distinguish factual questions, such as whether a particular offer was explained, from questions requesting your impression. If the wording is unclear, ask the provider rather than deciding on a new interpretation after the event.

Avoid creating a detailed script that makes the interaction impossible to conduct naturally. Learn the essential requirements, required questions and prohibited actions. Check whether you need a receipt, order reference or other specified evidence, and whether the required file format will work on your device.

• Read the brief and questionnaire together.
• Check the report submission deadline.
• Know the support route before travelling.

Describe observations rather than motives

Write what the person did or said, with relevant context. For example, explain that nobody approached you during the observed period rather than asserting that staff did not care. Use exact quotations only when you remember the words accurately. A paraphrase should not be presented as a verbatim quote.

If you missed a detail, say so through the appropriate report field or support channel. Do not infer a conversation, appearance or timestamp from what normally happens. An honest limitation is better than a confident fiction, even if the missing detail means the provider cannot accept the report.

Handle evidence without creating extra exposure

Photograph or upload only what the authorised brief requires. Do not casually capture customers, payment cards, computer screens or unrelated documents. A requirement for a receipt does not authorise you to collect additional personal information or make covert recordings outside an established process.

Receipts can expose loyalty identifiers or payment fragments. Ask the provider what may be redacted before changing evidence; unrequested editing could also make the document unusable. Keep original files securely while resolving that question. Do not post assignment evidence publicly or use social media as a convenient file-transfer channel.

Submit, check and respond

After submission, check that files attached correctly and that the provider’s system actually shows the report as received. A draft saved in an app is not necessarily a submitted assessment. Keep the confirmation and assignment reference somewhere you can find without exposing them on a shared device.

If a reviewer asks for clarification, answer the question from your notes and evidence rather than rewriting the event to fit an expected result. Retain records for the period justified by your contract and any applicable legal obligations, then dispose of them securely. The ICO recommends protecting documents containing personal information; convenience alone is not a reason to leave them in public folders.

Check any automatic file backups on shared devices as well. Deleting an upload from an app does not necessarily remove copies held in a camera roll or cloud folder.

• Keep factual notes separate from assumptions.
• Check upload and submission status.
• Never fabricate missing evidence.