Section 330B | Exclusion of debit where relief allowed to another
From legislation.gov.uk
A company is not to bring into account as a debit for the purposes of this Part as a result of section 330A an amount which—
(a)is brought into account as a debit for those purposes by another company,
(b)is brought into account so as to reduce the assumed taxable total profits of another company for the purposes of Part 9A of TIOPA 2010 (controlled foreign companies), or
(c)is allowable as a deduction by a person for the purposes of income tax.