The decision could have far-reaching implications for the protections and freedoms given to transgender women in the U.K.

Judges say the "concept of sex is binary" while adding that transgender people will still have protection against discrimination.

The Supreme Court of the U.K. ruled earlier today that the legal definition of a woman under the country’s 2010 Equality Act is based on “biological sex.” However, the court said that trans people still have protections against discrimination under the law.