Bird flu: third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry at a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121) on 5 December 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 5 December 2025
• Last updated: 16 February 2026 — See all updates

• Disease Type: Bird flu (avian influenza)
• Disease control zone restrictions: No longer in force
• Disease control zone type: None
• Virus strain: H5N1
• Case opened date: 5 December 2025
• Case closed date: 16 February 2026

Case information

16 February 2026

Following successful completion of disease control activities and surveillance in the zone around a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121), the 10km surveillance zone has been revoked.

12 February 2026

Following successful completion of disease control activities and surveillance in the zone around a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121), the 3km protection zone has ended and the area that formed it becomes part of the surveillance zone.

All poultry on the premises have been humanely culled.

5 December 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed at a third large commercial poultry premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121).

A 3km protection zone and 10km surveillance zone has been declared around the premises. All poultry on the premises will be humanely culled.

Declarations

Download the revocation of a surveillance zone

This revokes the amended declaration of the ending of a protection zone.

This amends the declaration of the ending of a protection zone.

The revokes and replaces the declaration of an avian influenza protection zone and surveillance zone.

Further information

Check:

• the updated bird flu disease control zone map

• if you need a licence to move poultry, poultry by-products, eggs, material or mammals

Case number: AIV 2025/121

Published 5 December 2025

Last updated 16 February 2026 + show all updates

1. 16 February 2026

   Following successful completion of disease control activities and surveillance in the zone around a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121), the 10km surveillance zone has been revoked.

2. 12 February 2026

   Following successful completion of disease control activities and surveillance in the zone around a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121), the 3km protection zone has ended and the area that formed it becomes part of the surveillance zone. All poultry on the premises have been humanely culled.

3. 5 December 2025

   First published.