The persons liable for the tax on the value transferred by a chargeable transfer made (under section 4 above) on the death of any person are . . . —
the deceased's personal representatives;
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A purchaser of property, and a person deriving title from or under such a purchaser, shall not by virtue of subsection (1)(c) above be liable for tax attributable to the value of the property unless the property is subject to an Inland Revenue charge.
For the purposes of subsection (1) above a person entitled to part only of the income of any property shall, notwithstanding anything in section 50 above, be deemed to be entitled to an interest in the whole of the property.
Subsections (4) and (5) of section 199 above shall have effect for the purposes of this section as they have effect for the purposes of that section.