16.—(1) After the end of the period of 5 years beginning on the day on which the Order is made—
(a)no notice to treat may be served under Part 1 of the 1965 Act; and
(b)no declaration may be executed under section 4 of the 1981 Act as applied by article 19 (Application of Compulsory Purchase (Vesting Declarations) Act 1981).
(2) The authority conferred by article 23 (temporary use of land for carrying out the authorised development) ceases at the end of the period referred to in paragraph (1), except that nothing in this paragraph prevents Network Rail remaining in possession of land after the end of that period, if the land was entered and possession was taken before the end of that period.