R (on the application of Steinfeld and Keidan) (Appellants) v Secretary of State for International Development (in substitution for the Home Secretary and the Education Secretary) [2018] UKSC 32

Unanimous judgment of the Supreme Court allowing the appeal and making a declaration that sections 1 and 3 of the Civil Partership Act 2004 (to the extent that they preclude a different sex couple from entering into a civil partnership) are incompatible with article 14 of ECHR taken in conjunction with article 8 of the Convention.