Fast food chain McDonald's has announced that its buns and English muffins may now contain traces of nuts and peanuts.

Warning signs have been put up across UK stores, reading: "Please be aware that our buns and English Breakfast Muffins may contain nuts and peanuts until further notice."

The news has sparked a backlash from allergy suffers, although at present it is not clear how many stores are affected, the Mirror reports .

Diners have been taking to social media to express their disappointment at the change.

Twitter user @caraedden posted: "I might cry that McDonald's have traces of nuts in their burger buns."

Meanwhile @clairefwill76 tweeted: With a child who has nut and legume allergy it was disappointing to see your food is now a no go @McDonalds. Until Further Notice."

And @fuzzpuzz wrote: "MACCIES BREAKFASTS MAY CONTAIN NUTS 'TIL FURTHER NOTICE WHAT ??? am offended with my fellow nut allergy suffers @McDonalds."

Speaking to the Mirror, a McDonald's spokesman said: “We have been made aware that traces of nuts and peanut may have entered our supply chain and come into contact with the Buns and English Breakfast Muffins served in some of our restaurants.

“We have already introduced clear signposting in the restaurants affected at the front counter, on self-order screens, at drive-thru and on the click & collect and UBEREATS McDelivery apps.

"Anyone with any concerns should speak to the restaurant team or contact customer services. We have also notified Anaphylaxis Campaign who has alerted its members.

“The health and safety of our customers is our absolute priority, and this is a temporary issue which we are working to rectify as quickly as possible.”

Anaphylaxis Campaign shared a message on their website , reportedly funded by the fast food chain.

It said: "We have been alerted by McDonald’s UK that traces of nuts and peanuts may have come into contact with the Buns and English Breakfast Muffins served in some of their restaurants.

"Clear signposting is already in place in the restaurants affected at the front counter, on self-order screens, at drive-thru, on the click & collect and UBEREATS McDelivery apps.

"This is a temporary issue and it will be communicated by alert from us when resolved."

Customers with any concerns can speak to the restaurant’s team (at their local branch) or contact McDonald’s customer service on 0370 524 4622.