Popular chains Greggs and Costa Coffee are facing problems with product supplies.
It comes after retailers continue to struggle against a shortfall of HGV drivers.
Bakery chain Greggs has confirmed “interruptions in supply for some ingredients” which means some items are temporarily unavailable, The Mirror reports.
It has been reported that some shops have run out of chicken bakes and The Mirror also noted how the popular snack was unavailable in some locations in Kent.
But despite the anecdotal reports, a spokesperson from Greggs said “there are no current supply issues with our chicken bakes”.
Customers have been complaining on Twitter about a lack of food, with one person tweeting a sign from inside one Greggs store.
The sign says: “We’re sorry but we might not have your favourite sandwich available today.
“We’re working around the clock to get more stock to this shop as soon as we can. We’re really sorry for any disappointment caused.”
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Greggs has several chicken items on its menu including its chicken bake, the chargrill chicken oval bite, and several chicken-filled baguettes and sandwiches.
Similar chicken issues caused Nando’s to shut 50 restaurants temporarily last week.
A Greggs spokesperson said: “Unfortunately, like others , we’re seeing temporary interruptions in supply for some ingredients which occasionally results in shops not being able to maintain full availability on all lines.
“However, we have a wide range of choices in our menu for customers happy to buy an alternative.”
Costa, meanwhile, is offering a reduced menu, with customers saying some stores have run out of decaffeinated coffee.
The high street coffee chain said on Twitter: “We are facing some supply chain issues just now. We’re working hard to resolve this ASAP.”
A Costa spokesperson added: “Like many other businesses, we are currently experiencing some stock shortages and as a result some items may be temporarily unavailable. We apologise for any disappointment or inconvenience caused to our customers.”
Greggs and Costa join a growing list of fast food chains that are experiencing shortages in recent weeks.
McDonald’s said it has run out of milkshakes in some of its restaurants, while KFC was forced to take some items off the menu due to a lack of stock last week.
While neither of the fast food chains have specifically confirmed what the problems are, retailers across the UK have been grappling with a shortfall of around 100,000 HGV drivers.
The lack of drivers was an issue before Covid-19 but experts say the shortfall has been made worse due to the pandemic and a backlog of driver tests.
Brexit and post-EU rules have also been linked to the issues. About 14,000 European lorry drivers left the UK last year and only 600 have returned, statistics suggest.
All major supermarkets – including Big Four grocers Tesco, Morrisons, Sainsbury’s and Asda – have seen shelves left empty in recent weeks.
Aldi and Lidl also responded to complaints from customers last month.
The update from Greggs comes as the boss of supermarket chain Co-op warned how food shortages are at the worst level he’s ever seen. Meanwhile, the managing director of Iceland has said he fears supply chain issues could “cancel” Christmas this year.