The Union Jack or Flag consists of the flag of St
George (England)...
St. George's Flag (England)
superimposed on the diagonal red cross of Saint
Patrick (patron saint of Ireland)...
St Patrick's Flag (Ireland)
which is superimposed on the diagonal white cross
of Saint Andrew (patron saint of Scotland).
St Andrew's Flag (Scotland)
Properly known as the Union Flag, but commonly
called the Union Jack; the design and colours (especially the Blue Ensign) have
been the basis for a number of other flags including other Commonwealth
countries and their constituent states or provinces, and British overseas
territories
Union Jack or Union Flag?
There is continual correspondence about use of the terms Union Flag or
Union Jack. As can be seen from a written answer in the House of
Commons (UK Parliament) the terms are interchangeable.
Mr. Chope: To ask the Parliamentary Secretary, Lord
Chancellor's Department if the Government will introduce legislation to
ensure that it is always lawful to display the
Union Jack. [68049]
Ms Rosie Winterton: The Government see no need to introduce
such legislation. There are no restrictions under the general law on the
display of the Union Flag on land in England and Wales other than
those imposed by the provisions of the Trade Descriptions Act 1968 and
the Trade Marks Act 1994, which relate to the reproduction of flags in
trade marks. The Department for Culture, Media and Sport issues
guidance, in consultation with the Lord Chamberlain's Office, as to the
days The Queen has approved for flags to be flown from Government
buildings.
British ships are entitled to fly the Red Ensign, which includes a
Union Flag in the corner. This is internationally recognised at sea
as the flag of a British ship.