This letter sets out guidance for the 2025 to 2026 season. It includes the next steps for regions and providers to take, including which flu vaccines to order. The letter confirms that there are no changes to the eligible cohorts.

https://www.gov.uk/government/publications/national-flu-immunisation-programme-plan-2025-to-2026/national-flu-immunisation-programme-2025-to-2026-letter#further-information