# Compulsory Purchase Act 1965, Paragraph 18


A counter-notice under this Part must be served within the period of 28 days beginning with the day on which—
(a) the owner first had knowledge that the acquiring authority had entered on and taken possession of the land, or
(b) if later, the owner receives any notice to treat.

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Source: https://www.legislation.gov.uk/ukpga/1965/56/schedule/2A/paragraph/18 (the official version)
Page: https://openlegislation.uk/compulsory-purchase-act-1965/schedule-2A/paragraph-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.