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ICO anonymisation guidance: the same information can be personal data for one party and anonymous for another, United Kingdom

5 records were read from this source, dated 28 Mar 2025 to 18 Oct 2026.

Last checked 18 Oct 2026

What was read from it

Records read from this source
Record	Kind	As stated	Dated
ICO anonymisation guidance: the same information can be personal data for one party and anonymous for another (Information Commissioner's Office, Anonymisation guidance, 'How do we ensure anonymisation is effective?', 28 March 2025 (under review after the Data (Use and Access) Act))	Law or ruling	The ICO takes the same recipient-by-recipient view as the Court of Justice in EDPS v…	18 Oct 2026
ICO anonymisation guidance: the motivated intruder test (Information Commissioner's Office, Anonymisation guidance, 'How do we ensure anonymisation is effective?', 28 March 2025)	Law or ruling	A holder can test its de-identified lot by asking what a motivated person with…	18 Oct 2026
Details that identify together are coarsened and measured	De-identification rule	In tables, postcodes are cut to their first part (US ZIP codes to three digits, or 000…	15 Oct 2026
A person reads records picked at random	De-identification rule	Rules read every record; a person reads a random sample of the rewritten ones. With…	28 Mar 2025
An independent provider tests and certifies before each transfer	De-identification rule	Before a buyer receives anything, a de-identification provider you choose (not the…	5 Oct 2026

ICO anonymisation guidance: the same information can be personal data for one party and anonymous for another (Information Commissioner's Office, Anonymisation guidance, 'How do we ensure anonymisation is effective?', 28 March 2025 (under review after the Data (Use and Access) Act))
Kind
Law or ruling
As stated
The ICO takes the same recipient-by-recipient view as the Court of Justice in EDPS v…
Dated
18 Oct 2026
ICO anonymisation guidance: the motivated intruder test (Information Commissioner's Office, Anonymisation guidance, 'How do we ensure anonymisation is effective?', 28 March 2025)
Kind
Law or ruling
As stated
A holder can test its de-identified lot by asking what a motivated person with…
Dated
18 Oct 2026
Details that identify together are coarsened and measured
Kind
De-identification rule
As stated
In tables, postcodes are cut to their first part (US ZIP codes to three digits, or 000…
Dated
15 Oct 2026
A person reads records picked at random
Kind
De-identification rule
As stated
Rules read every record; a person reads a random sample of the rewritten ones. With…
Dated
28 Mar 2025
An independent provider tests and certifies before each transfer
Kind
De-identification rule
As stated
Before a buyer receives anything, a de-identification provider you choose (not the…
Dated
5 Oct 2026

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