Staff Corporal is the equivalent rank to Staff Sergeant

Staff Sergeant

Staff sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

 in the Household Cavalry

Household Cavalry

The term Household Cavalry is used across the Commonwealth to describe the cavalry of the Household Divisions, a country’s most elite or historically senior military groupings or those military groupings that provide functions associated directly with the Head of state.Canada's Governor General's...

, ranking between Corporal of Horse

Corporal of Horse

Corporal of horse is a rank in the British Army's Household Cavalry corresponding to sergeant in other regiments. Formerly, no cavalry regiments had sergeants, but the Household Cavalry are the only ones to keep this tradition alive. It is said to stem from the origin of the word sergeant, which...

 and Warrant Officer

Warrant Officer

A warrant officer is an officer in a military organization who is designated an officer by a warrant, as distinguished from a commissioned officer who is designated an officer by a commission, or from non-commissioned officer who is designated an officer by virtue of seniority.The rank was first...

 Class 2. He may hold an appointment such as Squadron Quartermaster Corporal. A Staff Corporal wears four point-up rank chevrons on his cuff, surmounted by a crown. Staff Corporals are actually addressed as "Corporal-Major" by superiors and usually as "Sir" by juniors, a holdover from the fact that the rank was originally called Troop Corporal-Major

Troop Sergeant Major

In the British Army, the Troop Sergeant Major is the senior NCO in a Royal Artillery troop, usually a Warrant Officer Class 2.This differs from a cavalry troop or infantry platoon, in which the highest-ranking NCO is usually a sergeant....

.