These Regulations amend regulation 15 of the Capital Gains Tax Regulations 1967 (S.I. 1967/149). Regulation 15 sets out the interpretation of certain expressions in the Capital Gains Tax Regulations 1967 (“the Principal Regulations”). Regulation 15(b) provides that a person shall not be treated as a person whose liability to capital gains is affected by the market value of an asset unless their liability has accrued under section 41 or 42 of the Finance Act 1965 and they are at that date or during any relevant year of assessment resident, ordinarily resident or carrying on a trade in the United Kingdom.