Staff sergeant
Staff sergeant majors existed in the Army Service Corps and Ordnance Store Branch in the 19th century. In 1896, however, staff sergeant majors in the new Army Ordnance Corps were renamed sub-conductors (becoming staff sergeant majors again in 1967). Staff sergeant majors remained in the Army Service Corps, later the Royal Army Service Corps, and continued when it became the Royal Corps of Transport in 1965. The appointment passed to the new Royal Logistic Corps in 1993.