Deputy Lieutenants are appointed by the Lord-Lieutenant subject to HM The Queen not disapproving of the granting of their commission. Once appointed they are holders of public office.
The number of Deputy Lieutenants in the county is calculated on the basis of population. There are between 50 and 60 Deputy Lieutenants in Essex at any one time.
Deputy Lieutenants retire at the age of 75, although they still retain their title.