Designated circumstances
2. In the opinion of the Secretary of State, food which is or may be in the future derived from sheep in the areas described in Schedule 1 is, or may be, or may become unsuitable for human consumption in consequence of the elevated levels of radioactivity found in those areas following the escape on or after 26th April 1986 of radioactive substances from a nuclear powered reactor situated at Chernobyl in the Ukraine, USSR.