In relation to a charge for tax arising by reason of section 20 -
(a) a reference in section 27 to a company controlled by the successor and the definition in that section of "group of shares" is construed as if (for the purpose of that reference) the list of persons contained in subsection (3) of that section and (for the purpose of that definition) the list of persons contained in that definition included the following, that is, the trustees of the discretionary trust, the living objects of the discretionary trust, the relatives of those objects, nominees of those trustees or of those objects or of the relatives of those objects, and the trustees of a settlement whose objects include the living objects of the discretionary trust or relatives of those living objects;
(i) subject to subparagraph (ii), the valuation date of the taxable inheritance is the relevant chargeable date,
(ii) where -
(I) a charge for tax arises on a particular date by reason of section 15 or section 118 (in
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