Around 700,000 eggs from Dutch farms implicated in the Fipronil contamination scare have been distributed to Britain, rather than the 21,000 first estimated, the Food Standards Agency (FSA) has said.
The FSA said investigations into the incident suggested it was "very unlikely" that the eggs posed a risk to public health as it released a list of processed products withdrawn in the UK "to ensure that consumers are protected".
Here is the Food Standards Agency list of egg products withdrawn due to a contamination scare.
Product - Pack size - Use-by dates
:: By Sainsbury's Ham and Egg Salad - 240g - August 9-14
:: By Sainsbury's Potato and Egg Salad - 300g - August 9-14
:: Morrison's Potato and Egg Salad - 250g - August 13
:: Morrisons Egg and Cress Sandwich - Sold in Morrisons Cafe only - August 11
:: Morrisons Cafe Sandwich Selection - Sold in Morrisons Cafe only - August 11
:: Waitrose Free Range Egg Mayonnaise Deli Filler - 240g - August 13-16
:: Waitrose Free Range Reduced Fat Egg Mayonnaise Deli Filler - 170g - August 14
:: Waitrose Free Range Egg and Bacon Deli Filler - 170g - August 14- 16
:: Asda Baby potato and free range egg salad - 270g - August 9-14
:: Asda Spinach and free range egg snack pot - 110g - August 9-13
:: Asda FTG Ham and Cheddar ploughman's salad bowl - 320g - Aug 9-13
The move came as Dutch investigators detained two men suspected of being involved in the illegal use of the pesticide at poultry farms that sparked the massive food safety scare in several countries.
The FSA said all products withdrawn in the UK were processed foods in which egg was one ingredient among many others, mostly used in sandwich fillings or other chilled foods.
It said some of the products made from these eggs would have already been consumed, but some were still within the expiry date and were being withdrawn by the businesses involved.
Many of the eggs were mixed with others which had not come from affected farms so Fipronil residues would be highly diluted, it added.
The decision to withdraw the products was not due to food safety concerns but based on the fact that the pesticide is not authorised for use in food-producing animals.
The FSA said it had no evidence that eggs laid in the UK were contaminated or that Fipronil had been used inappropriately here, and testing results to date for England and Wales showed no exposure to the pesticide.
FSA chairwoman Heather Hancock said: "I'm confident that acting quickly is the right thing to do.
"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.
"Based on the available evidence there is no need for people to change the way they consume or cook eggs. However, Fipronil is not legally allowed for use near food-producing animals and it shouldn't be there."
British egg processors immediately criticised the buying policies of the UK's major supermarkets after the FSA released the list of withdrawn products.
British Lion Egg Processors chairman Ian Jones said: "The major retailers are operating to double standards when it comes to eggs. All of them stock British Lion shell eggs but they use imported eggs in many of their other foods containing eggs.
"This is just the latest of a number of food safety issues connected to eggs produced outside of the UK in recent years. Consumers clearly want retailers and food manufacturers to use good-quality British ingredients that are produced to high standards of food safety, but in some prepared foods this is not the case."
British egg producers reiterated the need for consumers and food producers to look for British Lion eggs and egg products following the FSA's announcement.
Aldi and Lidl stores in Germany, along with Dutch supermarkets, have already taken millions of eggs off their shelves.
Aldi said it was "purely precautionary" and added that those sold in its UK outlets are produced in Britain.
The scare started in the Netherlands and Belgium and it is thought that disinfectant used in products on chicken farms is at fault.
Belgian authorities admitted that a farm alerted them to possible contamination in June - several weeks before the scare became public knowledge - but they thought it was an isolated case.
Britain produces 85% of the eggs it consumes but imports almost two billion annually.
Reported adverse effects from consumption of Fipronil include sweating, nausea, vomiting, head and stomach pain, dizziness and seizures, according to the US National Pesticide Information Centre.