Supermarket shelves in the UK have been empty due to retailers refusing to pay higher prices for fresh produce, caused by high energy prices and cold weather in Spain. Environment Secretary Therese Coffey suggested eating local, seasonal produce to resolve the shortage, but UK wholesalers and growers stated there is enough produce available. The cost of local and imported produce is a factor, with UK produce found in Singapore despite the high cost. The situation is expected to worsen as temperatures drop in Spain and Norway, leading to delays in produce volumes. Additionally, demand for vegetable seeds has surged as supermarkets limit sales of fresh produce.