Retailers and food businesses are expected to release information about their DNA-tested products, in light of what could be the biggest meat scandal this decade.
However, despite the government and food businesses making progress with the investigation, Downing Street officials have criticised supermarkets for not being open enough about the issue of horsemeat in some processed meat products.
Yesterday saw the first arrests made in conjunction with the scandal. Police arrested two people at Farmbox Meats near Aberystywth. In a simultaneous operation, police also arrested another person at the Peter Boddy Slaughterhouse in Todmorden, West Yorkshire.
Neither of the plants have been in operation since Wednesday, 13 February.
A statement on the FSA website said: "Dyfed-Powys Police can confirm the three people have been arrested on suspicion of offences under the Fraud Act and they are being detained at Aberystwyth Police Station where they will be interviewed jointly by police and FSA staff in what has this afternoon become a joint operation."