Bryan McAllister’s personal reference notebook
September 11, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
Civic Brief • Flags

Union Jack

The Union Jack is the national flag of the United Kingdom, and the term “Union Flag” is also commonly used.

Updated September 11, 20261 min readCited sources

The Union Jack is the national flag of the United Kingdom, also called the Union Flag. Its present design dates to 1801, combining symbols of England, Scotland, and Ireland.

History

The flag’s earliest form was created in 1606 after the union of the crowns of England and Scotland. The modern design dates from 1801, following the political union with Ireland.

Design and symbolism

The Union Jack is made from layered crosses representing the patron saints of England, Scotland, and Ireland. Its visual structure reflects the political unions that formed the United Kingdom.

Name and usage

Both “Union Jack” and “Union Flag” are used for the same flag. Historical usage distinguished between land and naval contexts, but modern references treat both as acceptable.

In short

  • Composite of three crosses: St. George, St. Andrew, St. Patrick.
  • Current design adopted in 1801.
  • Both 'Union Jack' and 'Union Flag' are correct.
  • Flag remained unchanged after 1922.
Canadian angle

The Union Jack has historical relevance in Canada because it was used in the colonial period and remains part of some Canadian heraldic and ceremonial contexts, but it is not Canada’s national flag.

Quick questions

What is the Union Jack?
It is the national flag of the United Kingdom, also called the Union Flag.
What does the Union Jack represent?
It combines symbols of England, Scotland, and Ireland through the crosses of St. George, St. Andrew, and St. Patrick.
When was the current Union Jack adopted?
The current design was established in 1801.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Union_Jack
    Supports: Origins in 1606, current design from 1801, unchanged after 1922, and description of the flag’s composition.
  2. The Royal Family — https://www.royal.uk/union-jack
    Supports: Describes the Union Jack as the national flag of the United Kingdom and explains its composite symbolism.
  3. BBC News — https://www.bbc.co.uk/news/uk-20966371
    Supports: Notes the flag’s national status through custom and practice rather than a single legal definition.
  4. The Flag Institute — https://www.flaginstitute.org/wp/uk-flags/the-union-jack-or-the-union-flag/
    Supports: Explains the naming issue and official acceptance of both “Union Jack” and “Union Flag”.
  5. Encyclopaedia Britannica — https://www.britannica.com/topic/flag-of-the-United-Kingdom
    Supports: Describes the flag’s importance, use, and international recognition.
  6. HistoryExtra — https://www.historyextra.com/period/stuart/when-union-jack-flag-created/
    Supports: Provides historical context for the 1606 creation of the first Union flag.