(1)A company not resident in the United Kingdom shall not be within the charge to corporation tax unless it carries on a trade in the United Kingdom through a branch or agency but, if it does so, it shall, subject to any exceptions provided for by this Part of this Act, be chargeable to corporation tax on all its chargeable profits wherever arising.
(2)For purposes of corporation tax the chargeable profits of a company not resident in the United Kingdom but carrying on a trade there through a branch or agency shall be—
(a)any trading income arising directly or indirectly through or from the branch or agency, and any income from property or rights used by, or held by or for, the branch or agency (but so that this paragraph shall not include distributions received from companies resident in the United Kingdom); and
(b)such chargeable gains accruing on the disposal of assets situated in the United Kingdom as are by Part III of this Act made chargeable to capital gains tax in the case of an individual not resident or ordinarily resident in the United Kingdom.
(3)Where, in the year 1966-67 or any later year of assessment, a company not resident in the United Kingdom receives any payment on which it bears income tax by deduction, and the payment forms part of, or is to be taken into account in computing, the company's income chargeable to corporation tax, the income tax thereon shall be set off against any corporation tax assessable on that income by an assessment made for the accounting period in which the payment falls to be taken into account for corporation tax ; and accordingly in respect of that payment the company shall not be entitled to a repayment of income tax before the assessment for that accounting period is finally determined and it appears that a repayment is due.
(4)Without prejudice to the general application of income tax procedure to corporation tax, the provisions of Part XVI of the [1952 c. 10.] Income Tax Act 1952 relating to the assessment and charge of income tax on persons not resident in the United Kingdom, so far as they are applicable to tax chargeable on a company, shall apply with any necessary adaptations in relation to corporation tax chargeable on companies not resident in the United Kingdom.