A spokesperson for Surrey Police, which is carrying out the investigation in partnership with the Food Standards Agency (FSA) and Defra, refused to confirm the exact nature of the allegations, but said the FSA was keen to stress that the incident did not raise any food safety concerns for consumers.
The Guildford abattoir and boning plant at the centre of the investigation has recently been acquired by Anglo Beef Processors (ABP) as part of its expansion into the South East.
A spokesperson for ABP said that it was not involved in the investigation because the allegations were made prior to its takeover of the abattoir. He stressed that the acquistion of the site covered only the facilities and did not include any liabilities associated with the existing business there.
Andrew Chitty, owner of the Chitty Food Group, has so far refused to comment on the investigation.