UK Overfishing Exceeds Scientific Advice for 58 Percent of Fish Stocks in 2026

New data from the Centre for Environment, Fisheries and Aquaculture Science (Cefas) indicates that internationally agreed catch limits exceeded scientific advice in 58 percent of fish populations around the UK in 2026. Out of 79 catch agreements, 31 aligned with scientific advice, representing 39 percent, while 46 did not, and two could not be assessed.

The number of agreements meeting sustainability criteria decreased from 35 in 2025 to 31 in 2026.

Conservation charity Blue Marine stated that overfishing practices are contributing to shortages in stocks such as cod and mackerel. The organization noted that cod populations in the Celtic Sea have declined by 96 percent over the last decade, yet catch limits allow for harvests nearly equal to the remaining adult population.

Mackerel numbers in UK waters have fallen by approximately 76 percent during the same period.

Declines in Key Species The International Council for the Exploration of the Sea (ICES) recommended a 70 percent reduction in mackerel catches for 2026 compared to 2025 levels across regional stocks.

ICES stated that adhering to these limits is necessary to mitigate long-term risks to the species and the fishing industry. Blue Marine's fisheries policy lead, Jonny Hughes, said: "Scientists, conservationists and many inshore fishermen have long warned that current management approaches are failing to halt the decline of critical species.

" — Jonny Hughes, Blue Marine fisheries policy lead (The Independent) In response to these trends, supermarket chain Waitrose announced it would remove mackerel from its shelves by April 29, 2026, to reduce pressure on overfished species.

The Marine Conservation Society (MCS) advised consumers to avoid purchasing UK-caught cod, stating there is no sustainable method to harvest the species currently. MCS also recommended avoiding trawled scampi in its Good Fish Guide, which assists shoppers in selecting sustainable seafood options.

Government Response and Support Measures The UK government introduced the Fisheries and Seafood Scheme (FaSS), allocating around £132 million over five years to fund coastal projects and businesses.

" These developments occur amid ongoing international negotiations on fishing quotas, which aim to balance industry needs with conservation goals. Fish stocks are monitored through collaborative efforts involving Cefas and ICES, providing data that informs annual catch decisions.

The declines affect fishing communities, seafood suppliers, and consumers, potentially leading to higher prices and reduced availability of popular species. Sustainable fishing practices, such as adhering to scientific quotas, are seen as essential for maintaining biodiversity in UK waters. The FaSS scheme includes support for innovation in fishing methods and habitat restoration.

Monitoring will continue to assess progress toward recovery targets for affected stocks.