55.—(1) The National Assembly must, on confirmation by the Chief Veterinary Officer of low pathogenic avian influenza on premises other than regulated places in Wales (and subject to paragraph (4)), declare a low pathogenic avian influenza restricted zone around the infected premises.
(2) The National Assembly must, on confirmation by the Chief Veterinary Officer of low pathogenic avian influenza in an area of England which is less than 1 kilometre from Wales, declare a low pathogenic avian influenza restricted zone in Wales.
(3) The National Assembly may declare a low pathogenic avian influenza restricted zone on confirmation by the Chief Veterinary Officer of low pathogenic avian influenza in an area of Scotland or England which is 1 kilometre or more from Wales.
(4) The National Assembly may, on the basis of a risk assessment, decide not to declare a low pathogenic avian influenza restricted zone if the premises where low pathogenic avian influenza is confirmed are—
(a)a hatchery; or
(b)special category premises.