Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Data protection definition

What does Data protection mean? In legal practice, data protection describes the rules governing how organisations collect, use, share, retain and secure personal data, including employees’ information. In the UK this regime is set by the UK GDPR and the Data Protection Act 2018; in Ireland by the EU GDPR and the Data Protection Act 2018 (Ireland). The label is descriptive; core concepts (personal data, controller, processor, special category data) and obligations are defined in legislation. In employment, the employer is typically the controller and must identify a lawful basis (for example, contract, legal obligation or legitimate interests) and, for special category data,...

Data Protection Act 2018 (UK): timeline of key dates, UK GDPR amendments, ICO codes and DUAA 2025 reforms

Published by a LexisNexis Information Law expert

Practice notes

This timeline outlines principal relevant dates and details linked to the creation, commencement and revision of the Data protection Act 2018 (DPA 2018). For DPA 2018 guidance, consult Practice Note: The Data Protection Act 2018, and for a broad and comprehensive primer on UK data protection law, drawing together key practical guidance and materials, see: UK data protection law collection. The tracker captures information on the more recent application of DPA 2018 under the United Kingdom General Data Protection Regulation, Assimilated Regulation (EU) 2016/679 (UK GDPR) (including as amended by the Data (Use and Access) Act 2025 (DUAA 2025)), as well as its earlier application under the EU’s General Data Protection Regulation, Regulation (EU) 2016/679 (EU GDPR) framework (ie before 11 pm on 31 December 2020). For guidance on the latter, and on Brexit-related modifications to DPA 2018, see Practice Notes: Brexit—implications for data protection [Archived], Information Law—Brexit tracker [Archived]—Data protection, and The Data Protection Act 2018 and the UK GDPR.

Key developments

Date Summary 16 April 2026 The Data Protection Act 2018 (Code of practice on Artificial Intelligence and Automated Decision-Making) Regulations 2026, SI 2026/425 are duly made, obliging the Information Commissioner to prepare a statutory code of practice...

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Web page updated on 21/05/2026

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