The UK supermarket retailer has recently added more Aquaculture Stewardship Council-certified salmon, seabass, scallops and prawns to its existing range.
The aquaculture certification organisation will join the Market Advisory Council executive committee that helps shape advice on fisheries and aquaculture markets in Europe.
An independent review finds the ASC Farm Standard scores highly on welfare criteria, identifying the organisation as the strongest performer among the three largest aquaculture certification schemes.