On 28 March 2025 the UK Information Commissioner’s Office (ICO) published its guidance on anonymisation and pseudonymisation under the UK GDPR (the Guidance). Senior Associate Alex Jameson and Trainee Solicitor Steph Ong delve into what is covered by the guidance, including fundamental concepts, managing identifiability risks, various techniques and approaches for anonymisation and pseudonymisation, and the importance of accountability and governance in an article published by LexisNexis.