This year's was Engalnd's second-worst harvest on record as wet weather smashed production of crops.
Wheat harvests were estimated at 10 million tonnes collectively, marking a 21% fall on 2023, think tank the Energy and Climate Intelligence Unit (ECIU) said after analysing government data.
Winter barley production fell by 26% in the meantime, with oilseed rape harvests down by 32% collectively.
This followed record-breaking rain last winter and poor conditions into the spring and early summer, which hit yields and farmers’ ability to grow crops
The resulting shortfall was estimated to have dealt a £600 million blow to farmers across the country, based on wheat, winter barley, spring barley, oats and oilseed rape production.
“This year’s harvest was a shocker, and climate change is to blame,” ECIU analyst Tom Lancaster said.
“It is clear that climate change is the biggest threat to UK food security.
“These impacts are only going to get worse until we reduce our greenhouse gas emissions to net zero, in order to stop the warming that is driving these extremes.”
He called on the government to invest in the likes of sustainable farming in the upcoming Autumn Budget, adding rainfall in recent weeks meant production could be even worse next year.