United Kingdom: Amendment 49B to Data (Use and Access) Bill including copyright protection regulation was approved by House of Lords

On 12 May 2025, the House of Lords agreed to Amendment 49B to the Data (Use and Access) Bill as part of Bill 238 2024-25, a package of Lords Amendments to the Bill. The amendment requires the Secretary of State or the Treasury to introduce regulations mandating AI developers to publish business data detailing the copyrighted materials used in AI model development. The amendment covers data inputs for pre-training, training, fine-tuning, and retrieval-augmented generation, and requires mechanisms for copyright owners to identify their works. Provisions also include bot identification requirements and enforcement measures. The amendment was passed by the House of Lords despite government opposition.