Section 12 | Non-resident with United Kingdom branch or agency.
From legislation.gov.uk
(1)Subject to any exceptions provided by this Act, a person shall be chargeable to capital gains tax in respect of chargeable gains accruing to him in a year of assessment in which he is not resident and not ordinarily resident in the United Kingdom but is carrying on a trade in the United Kingdom through a branch or agency, and shall be so chargeable on chargeable gains accruing on the disposal—
(a)of assets situated in the United Kingdom and used in or for the purposes of the trade at or before the time when the capital gain accrued, or
(b)of assets situated in the United Kingdom and used or held for the purposes of the branch or agency at or before that time, or assets acquired for use by or for the purposes of the branch or agency.
(1A)Subsection (1) above does not apply unless the disposal is made at a time when the person is carrying on the trade in the United Kingdom through a branch or agency.F1
(2)This section shall not apply to a person who, by virtue of Part XVIII of the Taxes Act 1988(double taxation agreements), is exempt from income tax chargeable for the year of assessment in respect of the profits or gains of the branch or agency.F2
(2A)This section shall apply as if references to a trade included references to a profession or vocation.F3
(3)In this Act, unless the context otherwise requires, “branch or agency” means any factorship, agency, receivership, branch or management, but does not include any person within the exemptions in section 82 of the Taxes Management Act 1970 (general agents and brokers).