No, ISA accounts can only be held in GBP.
According to HMRC regulations, it is not permissible to hold an ISA account in any currency other than GBP. This means that if the base currency of a stock is not in sterling (GBP), a currency conversion must occur at the time of the trade. At Saxo Bank, we offer a market-leading conversion rate of 0.25%, ensuring competitive and efficient currency conversions for your investments.