The following is a list of all confirmed designations of Bonamia ostreae within England and Wales, issued by the Fish Health Inspectorate. The list is ordered by the date when the confirmed designation was first issued.

All maps are reproduced by permission of Ordnance Survey on behalf of HMSO. © Crown copyright and database right 2011. All rights reserved. Ordnance Survey Licence number 100022861.

• Bonamia ostreae containment areas (PDF) - *Amendment 8 November 2011* Menai Strait added.