UK's super-heated summer could lead to food shortages, experts warn

Britain's leading farming union has warned that the UK could face food shortages in the coming months, as successive heatwaves put inordinate pressure on summer crops and livestock.

Tom Bradshaw, president of the National Farmers Union, has said that "very, very poor" grain yields are being recorded across England and Wales, leading to a high chance that food shortages will hit supermarkets towards the end of 2026. 

Initial wheat reports - the UK's most widely grown crop - indicate a 13 per cent decline in yield compared to the five-year average; spring barley is also down, with some farmers reporting up to 25 per cent declines in their expected yields.  

The figures come as farmers are forced to undertake the earliest harvest in 20 years, following weeks of prolonged hot and dry weather that has resulted in cereal grains maturing up to a month ahead of usual schedule. This early maturation has meant shorter growing periods and stunted growth, reducing overall grain yields. 

Fruit and vegetable output across the UK have also been hard hit, with production plummeting as water shortages affect traditional summer crops. Tough growing conditions compounded by irrigation restrictions and depleting reservoirs have curbed supply, sending the wholesale price of goods like tomatoes and iceberg lettuce shooting up by 60 per cent and 90 per cent respectively - prices which are then passed onto consumers.

Pricey imports of these summer staples from countries like Spain are now on the rise as supermarkets, restaurants and pubs try to meet demand for the fresh fruits and vegetables, further pinching the everyday shopper's pocket. 

Britain already imports nearly half of its fresh vegetables and the majority of its fruit, with most of the demand met by the European Union; however the devastating wildfires that continue to sweep across western and southern Europe will add to further supply-chain shocks, leaving consumers vulnerable to price hikes. 

Pastoral farmers are voicing their own concerns over challenges they face in keeping livestock fed, as the testing weather dries up usually-green grassland. Beef and dairy farms up and down the UK have reported breaking into their winter hay and silage stocks to feed hungry cattle, leaving many concerned with how they will manage in the colder months. 

The blistering temperatures have also impacted the animals themselves, with heat-stressed cows producing significantly less milk - up to 20 per cent less across some farms in the west of England. 

Soaring production costs of fuel and fertilizer compounded by global geopolitical tensions add to an already bleak picture; the number of dairy farmers in the UK dipped below 7,000 for the first time in June, as tough margins made the industry impossible for smaller farms.

The combination of an unprecedented summer heatwave and a shifting milk-to-feed-price-ratio (MFPR) has led the UK's Agriculture and Horticulture Development Board to forecast a 0.9 per cent year-on-year decline in milk production, to 12.91 billion liters for the 2026/27 season.

This sudden undersupply has caused short-term milk market prices to bounce back by 10p per liter, a trend that is expected to raise commodity cheese and butter prices heading into late 2026.

Experts have warned that such slashes in output across British farming could be seen on supermarket shelves in months to come, in the way of shortages and price increases. 

Supermarket giants Tesco and Sainsbury's have sounded the alarm over potentially faltering food supplies: Sainsbury's CEO Simon Roberts has publicly pushed Andy Burnham's new government to prioritise a "resilient food system that attracts investment, backs British farmers and helps keep affordable, nutritious food on tables across the nation."

As much of the UK continues to be squeezed by rising energy prices and above-average inflation, the impact of successive heatwaves and prolonged drought on farming is set to remain long after the mercury dips back down.