(1)For the purposes of the 1984 Act the Board may by regulations make such provision as is mentioned in subsection (2) below with respect to transfers of value made, and other events occurring, on or after 18th March 1986 where—
(a)a potentially exempt transfer proves to be a chargeable transfer and, immediately before the death of the transferor, his estate includes property acquired by him from the transferee otherwise than for full consideration in money or money’s worth;
(b)an individual disposes of property by a transfer of value which is or proves to be a chargeable transfer and the circumstances are such that subsection (3) or subsection (4) of section 102 above applies to the property as being or having been property subject to a reservation;
(c)in determining the value of a person’s estate immediately before his death, a liability of his to any person is abated as mentioned in section 103 above and, before his death, the deceased made a transfer of value by virtue of which the estate of that other person was increased or by virtue of which property becomes comprised in a settlement of which that other person is a trustee; or
(d)the circumstances are such as may be specified in the regulations for the purposes of this subsection, being circumstances appearing to the Board to be similar to those referred to in paragraphs (a) to (c) above.
(2)The provision which may be made by regulations under this section is provision for either or both of the following,—
(a)treating the value transferred by a transfer of value as reduced by reference to the value transferred by another transfer of value ; and
(b)treating the whole or any part of the tax paid or payable on the value transferred by a transfer of value as a credit against the tax payable on the value transferred by another transfer of value.
(3)The power to make regulations under this section shall be exercisable by statutory instrument subject to annulment in pursuance of a resolution of the Commons House of Parliament.