What is GDPR Compliance for AI?

GDPR compliance for AI is not a separate regulatory framework but the application of existing data protection law to a new technology. However, AI creates specific challenges that require careful attention, particularly around automated decision-making, data minimisation, and the rights of data subjects.

The starting point is lawful basis. If your AI system processes personal data, whether for training, inference, or both, you need a lawful basis under Article 6 of the UK GDPR. Legitimate interest is the most common basis for business AI applications, but it requires a documented assessment showing your interest does not override the rights of the individuals whose data you are processing. If you are using AI for automated decision-making that significantly affects individuals, Article 22 provides specific rights including the right to human intervention.

Data minimisation is a practical challenge with AI. Language models and machine learning systems often perform better with more data, but GDPR requires you to process only the personal data that is necessary for your specific purpose. This creates a tension that must be resolved through careful architecture. Techniques like anonymisation, pseudonymisation, and data aggregation allow you to build effective AI systems while minimising personal data processing.

For mid-market firms, the Data Protection Impact Assessment is typically the right tool for evaluating AI deployments. If your AI system involves systematic and extensive profiling, automated decision-making with legal or significant effects, or large-scale processing of special category data, a DPIA is mandatory. Even where not strictly required, conducting one demonstrates the accountability that the ICO expects.

The practical steps are to document what personal data your AI system processes and why, ensure your privacy notices cover AI processing, implement appropriate technical and organisational measures, and build processes for handling data subject access requests that include AI-processed data. Where you use third-party AI services, your data processing agreements must cover the AI-specific aspects of the relationship.