All the other companies on the list have been involved in some manner in the European horsemeat scandal, which you can read more about via the following links to coverage in the UK's Guardian:
- Horsemeat scandal: the essential guide - How the horsemeat scandal unfolded (a timeline) - Horsemeat scandal: Taco Bell withdraws UK beef products - McDonald's burgers "free of horsemeat" due to close ties with farmers, firm says
Click here for details about Neogen's F.A.S.T. tests for meat species.