'Skimpflation' warning as tinned mackerel alternative hits more supermarket shelves

Supermarkets across the UK are now stocking tins of jack mackerel in place of the traditional Atlantic mackerel, a shift that consumer watchdog Which? has labeled “skimpflation.” The change, driven by Princes – a major supplier to retailers such as Tesco, Sainsbury’s and Asda – involves swapping the nutrient‑rich Scombridae species for the cheaper, Chilean‑sourced Carangidae fish, which costs roughly one‑third as much at wholesale. Lidl has followed suit with its own house‑brand version, while the Department for Environment, Food and Rural Affairs recently amended labeling rules to allow the new product to be marketed as “jack mackerel.” According to Which? head of food policy Sue Davies, the substitution cuts omega‑3 levels by about half and vitamin B12 by a third, meaning shoppers may pay the same price for a product that delivers significantly less nutritional value.

The underlying cause of the switch is the dramatic depletion of Atlantic mackerel stocks after years of overfishing and a protracted “mackerel war” among the UK, Iceland, Greenland, Norway, the Faroe Islands, the EU and Russia over shared quotas. Scientific bodies such as the International Council for the Exploration of the Sea report that catches have exceeded advised limits by an average of 39 % over the past 15 years, slashing the stock by roughly three‑quarters in a decade. The Marine Stewardship Council has withdrawn MSC certification from the North‑East Atlantic fish, prompting retailers to seek a sustainable alternative; Chilean jack mackerel retains MSC approval, offering a lower‑cost, lower‑impact option despite its higher carbon footprint from distant sourcing.

Industry reactions highlight both consumer‑confusion concerns and broader implications for the UK fishing sector. The Scottish Pelagic Fishermen’s Association warned that replacing native mackerel unfairly penalises domestic fishers, while CEO‑designate Hannah Fennell noted the increased carbon emissions associated with importing Chilean stock. Consumer complaints have already emerged over taste, texture and labeling clarity, with Which? urging manufacturers to be transparent when altering product recipes. The trend is spreading beyond Britain, with Dutch supermarkets dropping Atlantic mackerel and a Swedish chain switching to jack mackerel, underscoring a wider European shift in response to overfishing pressures and sustainability mandates.

⚡ Effects Interpreter