http://www.legislation.gov.uk/ukpga/2018/30/section/7/enactedIvory Act 2018enKing's Printer of Acts of Parliament2018-12-20
Other exemptionsPre-1947 items with low ivory content
7
1
An item that has ivory in it is exempt from the prohibition if—
a
the item is pre-1947,
b
all the ivory in the item is integral to it,
c
the volume of ivory in the item is less than 10% of the total volume of the material of which the item is made, and
d
the item is registered under section 10.
2
For the purposes of subsection (1)(b) ivory is “integral” to an item if it could not be removed from the item without difficulty or without damaging the item.