The retailer assured customers that it was prioritizing the production of its most popular products, including staples such as salt and vinegar, salted, and cheese and onion, as well as Quavers and Wotsits.

A Walkers spokesperson said in a statement: 'A recent IT system upgrade has disrupted the supply of some of our products.

Our sites are still making crisps and snacks, but at a reduced scale.

We’re doing everything we can to increase production and get people’s favorites back on shelves.

We’re very sorry for the inconvenience caused.

' The company said that shortages could continue for several more weeks as its factories are not likely to return to their typical production levels until the end of November.

This comes amid a wider supply crisis that has rocked the UK in recent months, which is being fueled by a shortage of lorry drivers post-Brexit and the Covid-19 pandemic.

The food industry has also been hit by supply chain issues, with fast food chains such as McDonald's and KFC experiencing shortages.

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