Anonymising a consent form is the removal of data that names a study participant. UK GDPR Art. 89 covers research safeguards. anonym.plus runs on your device, so the agreement language stays while the participant is hidden. Where a study may include participants who lack capacity, the Mental Capacity Act 2005's research provisions (ss.30-33) set separate safeguards alongside UK GDPR Art. 89 — those safeguards apply to how consent or agreement was obtained, not to the de-identified copy of the form itself.
When this applies
An NHS Research Ethics Committee (REC) audits how consent was gathered for a multi-site mental health trial. The forms name participants, a witness, and a site, which must be stripped before the audit copy.
How anonym.plus handles it
- Open the form in anonym.plus on your device.
- Local OCR reads scanned signatures and print.
- It flags participant and witness names plus the site.
- Review each flag and keep the consent wording.
- Replace each value with a label, or redact it.
- Save the clean form. The source stays local.
What you need to provide
- The consent file (PDF, DOCX, TXT, or scan).
- An operator: Replace, Redact, or Mask.
- Optional: a key map for re-linking.
Patient data entity types detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Participant | PERSON | Lea Vogt → [PARTICIPANT_1] |
| Witness | PERSON | witness Bjorn → [WITNESS_1] |
| Study site | ORGANIZATION | Site Birmingham → [SITE] |
| Sign date | DATE_TIME | Signed 27/05/2026 → [DATE] |
| EMAIL_ADDRESS | lea.vogt@uni.ac.uk → [EMAIL] | |
| NHS number | NHS_NUMBER | NHS 311 905 1234 → [NHS_NO] |
Compliance achieved
- Removes identifiers under UK GDPR Art. 89 research safeguards.
- Where a participant may lack capacity, Mental Capacity Act 2005 ss. 30-33 set the extra safeguards for research consent — a separate question from the anonymisation this tool performs.
- Once anonymised, the file falls outside UK GDPR under Recital 26.
- Runs offline, so no cross-border transfer occurs.
- Forms are sealed with AES-256-GCM.
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Limitations & cautions
A signed form carries a handwritten name and date. The tool flags typed and OCR-read text. You still verify that no inked signature image slips through before you share the audit copy.
Frequently asked questions
Why anonymise a signed form?
An audit usually needs the form's structure and process, not who signed it. Removing names and dates lets a Research Ethics Committee review how consent was gathered across a multi-site trial without exposing individual participants.
Are witnesses removed?
Yes. A named witness is an identifier in its own right. The tool flags them so the participant cannot be traced through who co-signed alongside them.
Does anonymising the form affect whether consent was validly obtained?
No. Whether consent (or, for a participant lacking capacity, agreement under Mental Capacity Act 2005 ss.30-33) was properly obtained is a question about the original process, already settled before the audit. De-identifying the copy only protects participants' identities during the REC's review of that process.