Section 937M | Foreign currency accounting
From legislation.gov.uk
(1)In determining under this Part amounts that a company may or may not bring into account in an accounting period, economic losses and profits are to be computed in the tax calculation currency of that company in that accounting period.
(2)Section 17(5) of CTA 2010 (meaning of references to the tax calculation currency of a company) applies for the purposes of this section.