Actuarial anonymisation is the removal of direct identifiers from a modelling table. UK GDPR Recital 26 says truly anonymous data falls outside the rules, and the ICO Anonymisation Code applies a motivated-intruder test. anonym.plus marks each identifier on your device, so the figures stay analysable while the people behind them are shielded.
When this applies
A modelling table mixes premiums and losses with the names behind each row. You strip those identifiers before the data feeds an analyst's model.
How anonym.plus handles it
- Open the table in anonym.plus on your device.
- The tool flags names, IDs, and contacts in each field.
- Local OCR reads any scanned source sheet.
- Turn the alias map OFF for true anonymity.
- Swap or black out the confirmed identifiers.
- Save the clean table locally.
What you need to provide
- The dataset (CSV exported to PDF, DOCX, or TXT).
- An operator (Redact suits a table you will model).
- The alias map turned OFF so no link survives.
PII & financial identifiers detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Names | PERSON | policyholder name → [SUBJECT] |
| Identifiers | UK_NINO | national insurance no → [NINO] |
| Financial | MONEY | claim sum £41,200 → [AMOUNT] |
| Contact | EMAIL_ADDRESS | holder@example.co.uk → [EMAIL] |
| Dates | DATE_TIME | DOB 1984 → [DOB] |
| Location | LOCATION | postcode SW1A → [REGION] |
Compliance achieved
- Aims at the anonymity standard described in UK GDPR Recital 26.
- Turning the alias map off removes any re-link route.
- Offline work keeps the source figures off any server.
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Limitations & cautions
Recital 26 treats data as anonymous only if no one can re-identify a person. Rare combinations of age, region, and loss can still single someone out under the motivated-intruder test. Check for such outliers before you publish.
Frequently asked questions
When is a dataset truly anonymous under UK GDPR?
Recital 26 sets the bar at no reasonable means of re-identification. Remove direct identifiers and turn the alias map off, then test for rare row combinations.
Why turn the alias map off?
An alias map can re-link a row to a person. For true anonymity under Recital 26, leave it off so no reverse path remains.
Is the source table uploaded?
No. The app runs locally, so the figures never leave your device.