The contaminated egg scandal in the Netherlands has led to empty shelves in the supermarkets and it will be at least until the end of the week before supplies are back to normal, according to food retail umbrella group CBL.
Britain's Food Standards Agency said it was "urgently investigating the distribution of these eggs in the UK" from farms at the centre of the scare, while adding that "the number of eggs involved is very small and the risk to public health is very low".
Eggs contaminated with the "potentially harmful" pesticide fipronil have been distributed in the United Kingdom, after warnings from the European Union sparked panic across the continent.
The issue has drawn widespread attention in Germany and discount supermarket chain Aldi on Friday said it was withdrawing all eggs from sale at its more than 4,000 stores in Germany as a precaution.
In the dark and silent shed of a small Dutch poultry farm, 1.8 million eggs closely packed together wait to be destroyed.
Authorities in Switzerland and Sweden also said they were tracking shipments and removing eggs, as the impact of the affair widened.
Food producers, however, say there is no need to remove mayonnaise, cakes and other products containing egg from the shelves.
Fipronil is an insecticide used to combat insects such as fleas, lice, ticks, cockroaches and mites.
The number of eggs involved in the scare represents about 0.0001% of the nearly two billion eggs imported into the United Kingdom each year.
After Belgium failed to notify the European Union executive immediately on an ongoing investigation to a Belgian company for creating an illegal mite-killer containing fipronil, delayed to break the news to the Berlaymont.
Dozens of farms are being checked in the Netherlands, while Belgium's food safety agency is probing how Fipronil might have entered eggs destined for supermarkets.
Belgium's agriculture minister meanwhile said he had ordered the agency to report by Tuesday on why it failed to notify neighbouring countries until July 20 despite knowing about fipronil contamination since June.