McDonald’s has warned how some items might be temporarily off the menu due to supply chain issues.
Other dishes might have certain ingredients missing, the fast food chain explained.
Maccies has put up posters in some of its restaurants as a precaution to warn customers.
One poster in the Kings Road branch in Chelsea, west London, reads: "Due to supply chain issues, some menu items may be served with some ingredients missing and others may be temporarily unavailable.
"We apologise in advance to any customers impacted and thank you for your patience."
The same sign was spotted in another outlet, believed to be in Cambridgeshire, on June 24, and in an Edinburgh branch on June 30.
McDonald’s hasn’t confirmed which items are being affected or if certain areas are being worse hit than others.
It also isn't clear if any items have actually been pulled yet.
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A spokesperson said the fast food chain is "experiencing pressures" across its supply chain which "may impact a small number of our menu items" at restaurants.
They added that McDonald's is "working hard" to resolve the issue as quickly as possible.
This isn't the first time McDonald's has been hit by supply chain issues this year.
The fast food chain suffered a shortage of tomatoes at some of its restaurants back in April, forcing it to ration ingredients.
Its Big Tasty and Big Tasty with Bacon burgers were only served with one slice of tomato, instead of two, as a result.
McDonald's was also forced to pull its new Chicken Big Mac burger after it proved too popular with customers.
The Chicken Big Mac was pretty much the same as a regular Big Mac with the special sauce, but it has chicken patties instead of beef burgers.
McDonald's had previously ran out of milkshakes in UK stores due to supply chain issues.
At the time, the UK was experiencing a shortage of lorry drivers.
McDonald's also ran out of bottled drinks in some of their 1,250 locations.
