Dozens of Dutch farms visited by the company suspected of using Fipronil have been temporarily banned from selling their eggs until the hens and their stalls are declared cleared of the pesticide.
"The number of eggs involved is small in proportion to the number of eggs we eat, and it is very unlikely that there is a risk to public health".
The UK's Food Standards Agency said the number of contaminated eggs estimated to have reached the UK was far higher than the 21,000 first supposed, and that egg salads from Sainsbury's, Morrisons and Asda, and sandwiches from Waitrose and Morrisons had been withdrawn.
The recall could now be widened to include desserts, mayonnaise, Yorkshire puddings, ice cream, quiches, cakes, pastries and noodles over fears contaminated egg may have been used in the ingredients.
Numerous eggs were mixed with others which had not come from affected farms so Fipronil residues would be highly diluted, the FSA said.
Health minister Sophia Chan said yesterday that the authorities were "strengthening" inspections of eggs from Europe.
Four UK supermarkets withdrew products from their shelves on Thursday after it emerged that 700,000 eggs from Dutch farms had been distributed to Britain.
Testing of eggs on farms is under way across the United Kingdom and results to date for England and Wales show no exposure to Fipronil.
The EU countries that have received the eggs are the UK, Sweden, Austria, Ireland, Italy, Luxembourg, Poland, Romania, Slovenia, Slovakia and Denmark.
In an update on Thursday, the FSA said: "Some of the products made from these eggs will have had a short shelf life and will have already been consumed, however, we identified some that were still within the expiry date".
"Based on the available evidence there is no need for people to change the way they consume or cook eggs".
FSA chairwoman Heather Hancock said: "I'm confident that acting quickly is the right thing to do".
The Netherlands is Europe's biggest egg producer - and one of the largest exporters of eggs and egg products in the world.
Fipronil is commonly used to get rid of fleas, lice and ticks from animals but is banned by the European Union from use in the food industry.
Food safety authorities in other countries, including Britain, have reported discovering eggs from farms where Fipronil was used or products containing eggs from those farms.
Dutch farms produce billions of eggs each year, the majority for the export market.