Housing Act 1985

24 Where the compulsory purchase order is confirmed by the Secretary of State, the control order ceases to have effect—

(a) if the local housing authority enter into a contract to purchase the house, on the date when the contract is made;

(b) if the local housing authority, in pursuance of a notice served under section 11 of the [1965 c. 56.] Compulsory Purchase Act 1965, enter and take possession of the house or serve a notice under section 583 of this Act (power to take possession without displacing tenant), on the date when the notice under section 11 is served.