# Windsor Framework explainer

Source: https://www.keypedia.com/records/uk_mhra_guidance/uk-mhra/d28445dd-46db-4296-ba35-f5da90875bba
Type: Guidance
Published: November 20, 2024
Updated: March 11, 2025

> The UK Medicines and Healthcare products Regulatory Agency (MHRA) has issued guidance regarding the implementation of the Windsor Framework, effective January 1, 2025. This framework fundamentally changes how pharmaceuticals are regulated and distributed across the United Kingdom. The regulatory framework moves away from the previous split system between Great Britain and Northern Ireland, establishing a unified UK-wide market for medicines. Under this new arrangement, the MHRA will hold sole responsibility for authorizing all medicines across the entire UK. This shift addresses previous complexities where Northern Ireland remained subject to certain European Union regulations for medicines while Great Britain followed separate rules. Key actions required by pharmaceutical companies include updating product packaging to feature a "UK Only" label, ensuring all authorizations are converted to UK-wide licenses, and adjusting supply chain logistics to align with the new regulatory borders. Failure to implement these labeling and licensing changes by the January 2025 deadline will result in products being ineligible for sale within the UK market. While this document is a guidance summary rather than an inspection report targeting a specific company or listing past violations, it serves as a critical compliance roadmap to prevent future regulatory issues. Companies must review their product portfolios immediately to ensure every medicine meets the new criteria for the consolidated UK-wide authorization system.

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## Content

An explainer document for the pharmaceutical industry which brings together in a simpler format the information published in our Windsor Framework guidance collection . This page explains the main changes that implementing the Windsor Framework will introduce on 1 January 2025 and what you need to do to prepare.

## Attachments

- [Windsor Framework agreement on the supply of medicines in Northern Ireland explained](/government/publications/windsor-framework-explainer/windsor-framework-agreement-on-the-supply-of-medicines-in-northern-ireland-explained)
- [Windsor Framework agreement on the supply of medicines in Northern Ireland explained ](https://assets.publishing.service.gov.uk/media/673cc5cf7e8a3c98a090fe94/MHRA_Windsor_Framework_Explainer.pdf)