Expert-report redaction is the removal of personal data from a written opinion prepared for proceedings. CPR 35.3 makes the expert's duty to help the court override any obligation to the instructing party, and the report must say the expert understands and has complied with that duty. anonym.plus marks identifiers locally, so the opinions and their bases stay intact.
When this applies
The opinion cites underlying records full of named subjects, plus the expert's own contact details. Two provisions limit how far you can cut. The report must state the substance of all material instructions, and those instructions are not privileged against disclosure, though the court orders disclosure only on reasonable grounds.
How anonym.plus handles it
- Open the file in anonym.plus on your device.
- The tool flags subject, expert, and third-party identifiers.
- Local OCR reads scanned data appendices.
- Keep the opinions, methods, and materials cited.
- Swap or black out the confirmed items.
- Save the clean copy locally.
What you need to provide
- The written opinion (PDF, DOCX, or scan).
- An operator (Replace keeps the analysis readable).
- Optional name map across linked files.
PII entity types detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Names | PERSON | Dr. Halverson → [EXPERT] |
| Names | PERSON | study subject → [SUBJECT] |
| Identifiers | UK_NINO | subject NINO → [NINO] |
| Dates | DATE_TIME | DOB 1981 → [DOB] |
| Contact | EMAIL_ADDRESS | expert email → [EMAIL] |
| Location | LOCATION | laboratory address → [ADDRESS] |
Compliance achieved
- Preserves the overriding duty to the court in CPR 35.3 and the statement of compliance CPR 35.10(2) requires at the end of the report.
- Keeps the substance of all material instructions that CPR 35.10(3) requires the report to state.
- Recognises that those instructions are not privileged under CPR 35.10(4), so a redaction there is a matter for the court.
- Leaves the report contents CPR PD 35 expects, including qualifications, the range of opinion, and the statement of truth.
- Respects CPR 35.12(4), under which the content of a discussion between experts is not referred to at trial unless the parties agree.
- Handles health data as processing necessary for legal claims under UK GDPR Art. 9(2)(f).
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Limitations & cautions
Part 35 requires the bases, data, and instructions behind each opinion. Redact personal identifiers, not the substance the rule demands, and treat any cut to the material instructions as a question for the court.
Frequently asked questions
What must an expert's report include?
CPR 35.10(2) requires a statement that the expert understands and has complied with the duty to the court, and CPR 35.10(3) requires the substance of all material instructions. PD 35 adds the qualifications, range of opinion, and statement of truth. Redact identifiers, not those parts.
Can I redact the material instructions?
Be careful. CPR 35.10(4) says the instructions are not privileged against disclosure, although the court will not order disclosure or permit questioning unless it is satisfied there are reasonable grounds to think the statement is inaccurate or incomplete. Take that decision with counsel.
What about the experts' joint discussion?
Under CPR 35.12(4) the content of the discussion between experts is not referred to at trial unless the parties agree. Keep that material in a separate clean set rather than folding it into a disclosed report.