Town and Country Planning Act 1954

4 Where the acquisition or purchase was not completed until after the said first day of July, but before that day the acquiring authority had carried out on the relevant land works for the erection or alteration of a building; or had on the relevant land constructed roads or provided sewers or other services, the provisions of subsection (2) of section ninety-one of the principal Act (which makes special provision as to compulsory acquisitions initiated and completed between the passing of that Act and the first day of July, nineteen hundred and forty-eight), and those provisions as applied by subsection (4) of that section (which relates to acquisitions by agreement by public authorities), shall apply as if they extended to acquisitions completed after the said first day of July in pursuance of a notice to treat served, or a contract made, after the passing of the principal Act but before that day:

Provided that where the acquiring authority had carried out on the relevant land any such operations as aforesaid before the service of the notice to treat, or the making of the contract, as the case may be, those provisions shall so apply as if, in paragraph (a) of the said subsection (2), the reference to the state of the land as it was immediately before the date of the notice to treat were a reference to the state of the land immediately before those operations were begun.