Oysters are becoming increasingly popular, seen on specials boards of new restaurants and chalkboards outside bars and pubs. Food enthusiasts on TikTok are enjoying them in large quantities. Priced at £1, oysters are not only healthy but also environmentally friendly, leading to a resurgence in their popularity.
However, the UK oyster industry is facing challenges due to disputes over the farming of various species, with producers struggling to keep up with demand. Brexit has also restricted imports and exports in the UK shellfish sector.
David Jarrad, the chief executive of the Shellfish Association of Great Britain, voiced concerns over government policies that he believes are detrimental to the industry, stating, “this coming year, it’s unlikely that farms will be able to restock.”
Historically, oysters have been integral to British cuisine. Charles Dickens noted in his 1837 novel The Pickwick Papers the abundance of oysters, describing stalls lined down the streets. By 1852, vessels were dredging up to 30,000 oysters weekly.
Such harvesting practices led to the depletion of native oyster reefs, and by the 1960s, the oyster population was severely impacted by overfishing and diseases like Bonamia ostreae. This crisis prompted the introduction of the Pacific rock oyster, a more resilient species that is currently driving the industry’s growth.
"The Pacific oyster is fast-growing, nutritious, and quite disease-resistant," Jarrad explained, yet he cautioned that the current revival could be short-lived without policy changes, as government focus remains on restoring native reefs while farmers are burdened with regulatory hurdles.
Restrictions on farm expansion apply unless farmers utilize triploid Pacific oysters, which are sterile and cannot reproduce, due to concerns about their impact on protected marine environments. In addition, new oyster farms are prohibited north of 52 degrees latitude to control the spread of Pacific oysters into non-native habitats.
The Pacific oyster (Magallana gigas), which thrives in estuaries and shallow waters, does not compete with the native oyster (Ostrea edulis), which is found in deeper offshore waters, and thus does not hinder restoration efforts for native reefs. However, an early misassumption that Pacific oysters wouldn’t reproduce in cooler UK waters has been overturned as warming oceans have facilitated their spreading into coastal areas.
This issue has caused significant concern in regions like Devon and Cornwall, where populations of around 150,000 oysters were culled to manage invasive reefs that disrupted local ecosystems.
Joanne Preston, a marine biology professor at Portsmouth University, emphasized the need to control the rapid reproduction of Pacific oysters, warning of potential drastic changes to coastal ecosystems.
Last year, the Duchy of Cornwall announced plans to eliminate Pacific oyster farms due to their invasive status. Despite this, former MP Anthony Mangnall argued that the government must recognize Pacific oysters as a naturalized species to secure the industry’s future, expressing concerns over the unclear regulations surrounding them.
The demand for oysters remains strong; recent events like the London oyster festival have quickly sold out, and viral videos celebrating oyster consumption, such as one featuring Georgiana Davies, known as “Oyster Girl,” highlight their enduring appeal.
Jarrad raised alarms over the difficulty in sourcing triploid oysters, stating their availability is nearly non-existent in the UK for the next couple of years due to a lack of local hatcheries and strict regulations on imports from France. He warned that this poses a significant risk to the sustainability of oyster farming.
Chris Hadfield, general manager at Maldon Oysters, expressed skepticism about government support for developing hatcheries within the UK, suggesting that state policy may be aimed at stifling the growth of the Pacific oyster sector.
Hadfield currently procures triploid seeds from France but expressed doubts regarding any governmental commitment to establishing local hatcheries necessary for industry growth.
Jarrad suggested that reallocating investments from native oyster conservation to Pacific oyster cultivation could yield better returns and enhance fishery development in the long run.
A spokesperson from Defra assured that the government supports the UK fishing and oyster industries and is working to promote sustainable practices within the sector.
