Town and Country Planning Act 1959

6 For the purposes of the application of section eighteen or section twenty-one of this Act, and of the provisions of this Schedule other than this paragraph, to a case falling within the last preceding paragraph, any reference to the principal amount of the compensation which was payable in respect of the compulsory acquisition shall be construed as a reference to the principal amount of the compensation which would have been payable in respect thereof if the interest in question had not been subject to a mortgage; and any reference to the principal amount of the compensation which would in any particular circumstances have been payable in respect of a compulsory acquisition shall be construed as a reference to the principal amount of the compensation which would in those circumstances have been payable in respect of such a compulsory acquisition if the interest in question had not been subject to a mortgage.