Transfers of value made by gifts in consideration of marriage or civil partnership are exempt to the extent that the values transferred by such transfers made by any one transferor in respect of any one marriage or civil partnership(calculated as values on which no tax is chargeable) do not exceed—
any excess being attributed to the transfers in proportion to the values transferred.
A gift is within this subsection if—
and in this section "child" includes an illegitimate child, an adopted child and a step-child and "parent", "descendant" and "ancestor" shall be construed accordingly.
A disposition which is an outright gift shall not be treated for the purposes of this section as a gift made in consideration of marriage or civil partnership if, or in so far as, it is a gift to a person other than a party to the marriage or civil partnership .
A disposition which is not an outright gift shall not be treated for the purposes of this section as a gift made in consideration of marriage or civil partnership if the persons who are or may become entitled to any benefit under the disposition include any person other than—
In subsection (4) "child of the family", in relation to parties to a marriage or civil partnership, means a child of one or both of them.
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Section 3(4) above shall not apply for the purposes of this section (but without prejudice to section 57 below).