Certifier : 
Control Union (UK) Limited
Certified status : 
Certified since : 
15 Jul 2021
Certificate expires : 
14 Jul 2026


Fisheries are composed of one or more parts, each of which is entitled to receive an MSC certificate. These parts or “units” are defined by their target stock(s), fishing gear type(s) and if relevant vessel type(s), and the fishing fleets or groups of vessels.

When the term “Unit of Certification” is used for fishing units that are in assessment, it refers to the “Unit of Assessment” or “Unit of potential certification”. Expand a status below to view the parts that form this fishery. To check the detailed scope, download the latest certificate or open the Assessments page to get the latest report. Find out more by visiting our page on Fisheries

Units of Certification & Certificate Information

  • Certified
    MSC UoC Number Species Gear Type Ocean Area Certificate Code
    UoC-2341 Blue mussel (Mytilus edulis) Dredges - Boat dredges 27 (Atlantic, Northeast) MSC-F-31496
    UoC-2340 Blue mussel (Mytilus edulis) Harvesting Machines 27 (Atlantic, Northeast) MSC-F-31496
    UoC-2343 Blue mussel (Mytilus edulis) Harvesting Machines 27 (Atlantic, Northeast) MSC-F-31496
    UoC-2339 Blue mussel (Mytilus edulis) Miscellaneous Gear 27 (Atlantic, Northeast) MSC-F-31496
    UoC-2748 Blue mussel (Mytilus edulis) Miscellaneous Gear: Suspended ropes 27 (Atlantic, Northeast) MSC-F-31496

View glossary of terms

Catch by Species

Species Reported Catch Year Metric Tonnes
Blue mussel (Mytilus edulis) 2022 60,437

Information is provided by an independent Conformity Assessment Body as live weight (the weight of species at the time of catch, before processing) and where a fishing season covers multiple years, the end year is given as the reported catch year. Additional information is available in the latest report, see the assessments page.