The justice secretary has said it is "absolutely unacceptable" to question the validity of the Supreme Court after it ruled that the term "woman" is defined by biological sex.
Speaking to Parliament's Human Rights Joint Committee, Shabana Mahmood said judges at the UK's highest court "provided the legal clarity in their legal decision which is exactly their job".
The decision was seen as a victory by many women's rights groups but some trans campaigners have argued it did not take into account their view of the complexities of biology and a transgender former judge says she plans to bring an appeal to the European Court of Human Rights .
Mahmood said: "It's disappointing… that some individuals have sought to question the validity of the Supreme Court or cast aspersions…"