This in turn means that titles are optional on UK passports and driving licences.
The names of shipboard officers, certain shipping line employees and Maritime Academy faculty/staff are preceded by their title when acting in performance of their duties.
In North America, several jurisdictions restrict the use of some professional titles to those individuals holding a valid and recognised license to practice.
Protected titles are often reserved to those professions that require a bachelor's degree[5] or higher and a state, provincial, or national license.
Some titles are used in English to refer to the position of people in foreign political systems The following are no longer officially in use, though some may be claimed by former regnal dynasties.