http://www.legislation.gov.uk/uksi/2009/2825/signature/madeThe Feed (Specified Undesirable Substances) (England) Regulations 2009Food standardsFood legislationenKing's Printer of Acts of Parliament2024-04-25AGRICULTURE, ENGLANDSigned by authority of the Secretary of State for HealthGillian MerronMinister of StateDepartment of Health21st October 2009