Part IV General Provisions
General provisions
105Members of a persons family
F1(1)
A
person
is
a
member
of
another's
family
if—
(a)
(b)
he
is
that
person's
parent,
grandparent,
child,
grand-
child,
brother,
sister,
uncle,
aunt,
nephew
or
niece.
(2)
For
the
purposes
of
subsection
(1)(b)—
(a)
a
relationship
by
marriage
F4 or civil partnership shall
be
treated
as
a
relation-
ship
by
blood,
(b)
a
relationship
of
the
half-blood
shall
be
treated
as
a
relationship
of
the
whole
blood,
(c)
the
stepchild
of
a
person
shall
be
treated
as
his
child,
and
(d)
an
illegitimate
child
shall
be
treated
as
the
legitimate
child
of
his
mother
and
reputed
father.