Waitrose, the UK supermarket chain, has announced the removal of mackerel from its shelves across all stores starting April 29, 2023, due to significant concerns over the sustainability of mackerel fishing. This decision makes Waitrose the first UK retailer to suspend mackerel sales, a move welcomed by conservationists who have been advocating for responsible fishing practices. The decline in mackerel stocks in the North-east Atlantic has been alarming, with warnings from the International Council for the Exploration of the Sea (ICES) indicating that without adherence to recommended catch limits, the species may face long-term threats. Waitrose's decision follows a December agreement by four coastal states to reduce mackerel catches by 48%, which was deemed insufficient by scientists. As an alternative, Waitrose will introduce a variety of new fish products, including hot smoked herring and MSC-certified frozen sardines, while keeping its partnerships with current suppliers. The supermarket's commitment to ethical sourcing is underscored by statements from its leadership, emphasizing the importance of balancing sustainable food production with ocean health. Conservationists hope this action will elevate the issue of overfishing to the political agenda and encourage other retailers to adopt similar measures.