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The '''Union Jack''' is the popular name for the national flag of the [[United Kingdom]].  It is a composite flag composed of the flags of the patron saints of three of the four countries that comprise the United Kingdom.  The cross of St Andrew represents [[Scotland]], St George represents [[England]] and the cross of St Patrick represents [[Northern Ireland]].  The only country which is part of the United Kingdom which does not have its flag included in the Union Jack is [[Wales]] which was historically incorporated into the kingdom of England.

The '''Union Jack''' is the popular name for the national flag of the [[United Kingdom]].  It is a composite flag composed of the flags of the patron saints of three of the four countries that comprise the United Kingdom.  The cross of St Andrew represents [[Scotland]], St George represents [[England]] and the cross of St Patrick represents [[Northern Ireland]].  The only country which is part of the United Kingdom which does not have its flag included in the Union Jack is [[Wales]] which was historically incorporated into the kingdom of England.

Strctly speaking, when it is not being flown from the Jack staff of a ship it is not a ''jack'' and it is correctly called a '''Union Flag'''.  However, the long standing popular preferrence of calling it it jack (in association with Britain's martitime history) would make such a distinction the reserve of only the most pedantic of flag enthusiasts.

Strctly speaking, when it is not being flown from the Jack staff of a ship it is not a ''jack'' and it is correctly called a '''Union Flag'''.  However, the long standing popular preferrence of calling it it jack (in association with Britain's strong maritime history) would make such a distinction the reserve of only the most pedantic of flag enthusiasts.

Its correct proportions of height to width is 1:2, except when used by the British Army when it is 3:5.   

Its correct proportions of height to width is 1:2, except when used by the British Army when it is 3:5.