"The aristocracy or leading men of this particular branch of the profession were the guardsmen"

The term guardsmen refers to the regiments of the British Army concerned with the personal safety of the Sovereign and the royal residences.

The mounted divisions who currently act as the Queen's bodyguard are known as the Household Cavalry, which consists of two regiments: the Life Guards and The Blues and Royals (the amalgamation of the Royal Horse Guards and The Royal Dragoons).

There are also currently five regiments who guard Buckingham Palace and St. James's Palace; these are known as Foot Guards: The Grenadier Guards, The Coldstream Guards, The Scots Guards, The Irish Guards and The Welsh Guards. 

During the period of Tipping the Velvet, the Irish Guards and the Welsh Guards did not yet exist.