Union Jack Union Jack The Union Jack, or Union Flag, is the national flag of the United Kingdom. The flag also has an official or semi-official status in some other Commonwealth realms: for example, it is a ceremonial flag in Canada by parliamentary resolution, and known there as the Royal Union Flag. Further, it is used as an official flag in some of the smaller British overseas territories. The Union Flag also appears in the canton (upper left-hand quarter) of the flags of several nations and territories that are former British possessions or dominions, as well as the state flag of Hawaii.
Union Jack long as it is tall, a ratio of 1:2. In the United Kingdom, land flags are normally a ratio of 3:5; the Union Jack can also be made in this shape, but is 1:2 for most purposes. In 2008, MP Andrew Rosindell proposed a Ten Minute Rule bill to standardise the design of the flag at 3:5, but the bill did not proceed past the first reading. Flags that have the Union Jack in the canton should always be 1:2 to preserve the square fly area. The three component crosses that make up the Union Flag are sized as follows: