(1)Such apportionments as are just and reasonable are to be made for the purposes of this Chapter if—
(a)the part of a residuary estate in which an interest within any of the provisions specified in subsection (2) subsists does not wholly correspond with the part in which another such interest held successively subsists, or
(b)one of those interests is in the whole of the residuary estate and the other is only in part of it.
(2)The provisions are—
section 954 (successive absolute interests),
section 955 (successive interests: assumed income entitlement of holder of absolute interest following limited interest),
section 956 (successive interests: payments in respect of limited interests followed by absolute interests),
section 957 (successive interests: holders of limited interest) and,
section 958 (basic amount of estate income: successive limited interests).