Disease control measures for avian influenza continue to evolve across England, with several restriction zones lifted in March 2026 following successful surveillance and containment work. Authorities confirmed that monitoring and restricted zones in Northumberland, Norfolk and Suffolk have now been revoked after disease control activities were completed, offering some relief to poultry producers in those areas.
However, new cases are still being detected. Highly pathogenic avian influenza (H5N1) was confirmed at a premises in North Yorkshire in early March, prompting the establishment of a 3km protection zone and a 10km surveillance zone, with all birds on site culled to prevent further spread.
Despite the easing of some local restrictions, England remains under a nationwide Avian Influenza Prevention Zone. Strict biosecurity measures are still legally required, and mandatory housing rules continue to apply for many keepers. Producers with 50 or more birds must keep them housed, while smaller flock owners must also house birds if they sell eggs, meat or live poultry.
The current outbreak season has seen 75 confirmed cases of highly pathogenic avian influenza in England, contributing to a UK-wide total of 96 cases so far. The UK is no longer considered free from the disease under international rules.
Risk levels remain a concern for the sector. The presence of the virus in wild birds is assessed as high, while the risk to poultry varies depending on biosecurity standards, ranging from low on well-managed sites to medium where measures are weaker.
Officials continue to stress that strong biosecurity is the most effective defence for poultry businesses. Bird keepers are urged to remain vigilant, follow zone rules, check licensing requirements for movements, and report any signs of disease promptly to protect flocks and limit further outbreaks.