(1)An officer of Revenue and Customs may serve a notice on a related company requiring it, within 30 days of the service of the notice, to pay—
(a)in a case which is not a consortium case, the amount of the unpaid tax, or
(b)in a consortium case, the proportion of that amount found under section 979.
(2)The notice must state—
(a)the amount of corporation tax assessed on the taxpayer company for the accounting period in question that remains unpaid,
(b)the date when it first became payable, and
(c)the amount which is to be paid by the company on which the notice is served.
(3)The notice has effect—
(a)for the purposes of the recovery from that company of the amount required to be paid and of interest on that amount, and
(b)for the purposes of appeals,
as if it were a notice of assessment and that amount were an amount of tax due from that company.
(4)In this Chapter “consortium case” means a case where the related company is not within section 976(1)(a).