The reason indicated for these closures has been the reform of European Union policies on sugar which reduced the quotas and subsidies available and therefore making its manufacture unprofitable in Ireland.

[14] The deal, however, fell through after businessman Ranjit Singh Boparan outbid Greencore to win the approval of Northern Foods shareholders, on 21 January 2011.

[19] The health of Greencore's U.S. business was questioned by investors as a result of a late August 2017 fear that Starbucks had backtracked on a contract at the coffee giant's Jacksonville facility in Florida.

Brokerage house Cantor Fitzgerald became the first firm to lower its investment rating of Greencore, stating that the stock's fall was caused by "some underlying event in the US.

[21] In June 2021 Patrick Murray, a manager at Greencore in Dundee, Scotland, was found to have racially abused an English employee and the company was fined £13,000.

[23] In June 2024, Greencore voluntarily and proactively recalled 45 of its products following an outbreak of Shigatoxigenic E. coli in the United Kingdom in major supermarket chains.

Although no testing of their products has yet indicated the presence of E. coli in them, Greencore wanted to take precautionary steps to minimize harm to consumers and spread information about the outbreak.