A supply chain involves a small number of stages, from a product being made until it gets to the shops for people to buy.
If you take a loaf of bread as an example, first the grain is grown, harvested, milled and stored until it is ready to be taken to a factory.
Those ingredients are used to bake and package the bread, which is taken to warehouses before eventually ending up on supermarket shelves.
Each stage of that process will incur expenses such as transport and storage, and rising costs at any step could end up in the product you buy being more expensive.
Last week, farmers and flour producers said they were adapting to the challenges of dealing with the earliest harvest for 50 years.
And the National Farmers’ Union has warned there could be a shortage of certain food products if current drought conditions continue.
More from Cambridgeshire:
“One week of hot weather will not make a loaf of bread more expensive,” says Prof Manoj Dora, director of the Centre for Intelligent Supply Chains at Anglia Ruskin University, which has campuses in Cambridgeshire and Essex.
But he says prices could rise if supplies of crops run out, largely because of how it would affect the very beginning of the supply chain.
“We may see that meat, milk, eggs, and chicken will be impacted by [a lack of] animal feed,” he says.
“Across different food products, prices could surge if we do not manage these things immediately.”
Dora describes the UK’s supply chain as “resilient” so the effects of the heatwave may not be felt immediately.
“We need to start thinking of the long term by reconfiguring our supply chain in terms of locations and transportation, and by supporting the farmers,” he adds.
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