Waitrose stops selling mackerel in all of its UK branches, according to the reports. The supermarket chain removes mackerel options across its product range, including fresh, chilled and frozen forms. The company says the move is linked to sustainability concerns, with the change framed as an effort to address overfishing. The decision is presented as a first of its kind in Britain, with the retailer becoming the only operator described as halting mackerel sales entirely rather than reducing availability. The reports do not specify when the withdrawal began or whether the move affects particular supplier types. They also do not provide detailed information on any alternative fish products Waitrose may promote in place of mackerel, or on whether the policy is temporary or permanent. Overall, the accounts describe a complete withdrawal of mackerel from stores, driven by sustainability-related considerations in response to concerns about fish stock pressure.