'A male can never be a lesbian as a matter of fact whether he is in possession of
a GRC recording his acquired sex as female or not. This is because he will never be female. It cannot seriously be disputed that humans are a sexually
dimorphic species. This fact is reflected in the differences in sex characteristics
as between women and men as was identified in Corbett v Corbett 40 and later in Bellinger v Bellinger41 .
These characteristics are innate and sex, therefore, is immutable. As it was put in Bellinger v Bellinger,
'The distinction between male and female exists throughout the
animal world. It corresponds to the different roles played in the
reproductive process. A male produces sperm which fertilise the
female's eggs. In this country, as elsewhere, classification of a
person as male or female has long conferred a legal status. It
confers a legal status, in that legal as well as practical
consequences follow from the recognition of a person as male or
female. The legal consequences affect many areas of life, from
marriage and family law to gender-specific crime and
competitive sport. It is not surprising, therefore, that society
through its laws decides what objective biological criteria
should be applied when categorising a person as male or female.
Individuals cannot choose for themselves whether they wish to
be known or treated as male or female. Self-definition is not
acceptable. That would make nonsense of the underlying
biological basis of the distinction.'