In section 10 of the Taxes Act 1988 (time for payment of tax) the following subsection shall be substituted for subsection (2)—
“(2)Where by virtue of subsection (1)(a) above corporation tax for an accounting period of a company is due without the making of an assessment, the amount for the time being shown in a return by the company under section 11 of the Management Act (corporation tax return) as the corporation tax for the period shall be treated for the purposes of Part VI of the Management Act (collection and recovery) as tax charged and due and payable under an assessment on the company.”