New Zealand's prime minister has announced plans for a referendum on whether to change the country's national flag.
While the Kiwis may be considering dumping it, a number of countries and regions still fly the symbol of the British union. Can you name some of them from the pictures below?
Answers are at the bottom of the page.
1) This flag is unusual for a British overseas territory as it sits on a red background, rather than the blue usually used ashore.
2) This flag was flown from several British government buildings on 14 June 2012 to mark a significant anniversary.
3) The five stars on the right of this flag represent the Southern Cross, while the larger star with seven points represents the Commonwealth.
4) This flag is unusual as it belongs to a territory has been free from British rule for well over a century. The eight stripes symbolise eight major islands.
5) The current version of this flag was adopted in 1970. Like New Zealand, the country is planning to introduce a new flag, but the process of replacing this one has yet to begin.
2) Falkland Islands