IHTM27031 - Foreign property: valuation of assets: household and personal goods
Foreign household and personal goods (IHTM21000) must be valued in the same way as UK assets.
Situs
Assets that are on display at a museum may not be counted as in the UK at the relevant time. In such a case the item may not be taxable in the UK (IHTM27075), depending on the domicile of the taxpayer