View All United Kingdom Flags Background. The central theme is a red cross of st. For flags used in the united kingdom, see list of british flags.
The union jack is often featured as part of the flags of british colonies and former colonies.
The red ensign is the appropriate courtesy flag for civilian ships visiting uk waters. The flag is created with the aspects of three older national flags; The national flag of the united kingdom, the crown dependencies and overseas territories is the union flag, which may also be called the union jack.1 the first union flag was created in 1606 and combined the flags of england and scotland. The union flag is not a national flag, but is officially a royal maritime flag.
