# The Plant Health (EU Exit) Regulations 2019, Paragraph 7


The demarcation of an infested zone and buffer zone must be based on sound scientific principles, the biology of the plant pest, the level of infestation, the evidence of establishment of the plant pest, the distribution of susceptible plants and the capacity of the plant pest to spread naturally.

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Source: https://www.legislation.gov.uk/ukdsi/2019/9780111177563/schedule/14/paragraph/7 (the official version)
Page: https://openlegislation.uk/draft-plant-health-eu-exit-regulations-2019/schedule-14/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.