Definition of Order of the garter

The Most Noble Order of the Garter is a medieval English order of chivalry or knighthood, and the pinnacle of the British honours system. Membership in it is limited to the Sovereign, the Prince of Wales and no more than twenty-four members, or Companions; men are known as Knights Companion, women as Ladies Companion. The Order also comprises "Supernumerary" knights and ladies, (e.g. members of the British Royal Family and foreign monarchs). Unlike with most other orders, the Sovereign is not subject to the Prime Minister's binding advice when making appointments. Membership is thus in the Sovereign's personal gift. Except for supernumerary membership, only people who have rendered exceptional service to the United Kingdom are awarded membership.