PART IINTRODUCTORY
Members of a person's family3.
(1)
For the purposes of this Order a person is a member of another's family if—
(a)
(b)
he is that person's parent, grandparent, child, grandchild, brother or sister.
(2)
For the purpose of paragraph (1)(b)—
(a)
a relationship by marriageF1 or civil partnership shall be treated as a relationship by blood,
(b)
a relationship of the half-blood shall be treated as a relationship of the whole blood, and
(c)
the stepchild of a person shall be treated as his child.