List of female cabinet members of the United Kingdom

Sixty-nine women have been appointed to positions in the Cabinet of the United Kingdom, with three female Prime Ministers serving in cabinet. Since, by convention, members of the cabinet must be a member of either the House of Commons or House of Lords, the Prime Minister could not appoint women to the cabinet until the Parliament (Qualification of Women) Act 1918 allowed women to stand for MP, and could not appoint peeresses to it until the Life Peerages Act 1958.

Source: Wikipedia — List of female cabinet members of the United Kingdom (CC BY-SA 4.0)