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ICO finalises guidance on anonymisation and pseudonymisation

On 28 March 2025 the ICO published new guidance on anonymisation and pseudonymisation. The guidance covers:

  • The key concepts of pseudonymisation and anonymisation
  • Identifiability (including the “reasonably likely” and “motivated intruder” tests)
  • How pseudonymisation can assist in compliance
  • Accountability and governance requirements for anonymisation
  • Case studies covering recruitment analytics and market insights

You can find the full guidance here.

If you are considering a project involving anonymisation/pseudonymisation and would like some business friendly, tailored advice, please get in touch by emailing hello@hellodpo.com

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