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The Union Jack on other flags

Eighteen cards in the deck share the same top left corner. This is what the corner means, how the flags around it differ, and where else it survives — including places you would not expect.

What the corner is

The Union Jack — the Union Flag, in stricter usage; both names are accepted — combines three crosses: the red cross of St George for England, the white diagonal cross of St Andrew for Scotland, and the red diagonal cross of St Patrick for Ireland. The first two were joined in 1606 under James VI and I; St Patrick's saltire was added in 1801 when Ireland joined the union, and it is set off-centre on the white diagonals rather than laid over them. That offset gives the flag a right way up: in the quarter nearest the pole, the broad white band sits above the narrow red one.

Ensigns, and why so many flags share the corner

A British ensign is a flag with the Union Jack in the upper hoist quarter — the canton — and a plain field. In 1864 the Royal Navy settled the three colours: the White Ensign for warships, the Red Ensign for merchant ships, the Blue Ensign for government vessels. The Blue Ensign was then allowed to the ships of colonial governments with the colony's badge in the fly, and the flag of the colony's ships became, by habit and then by law, the flag of the colony. That is where every flag below comes from: a Blue Ensign, a badge, and in most cases no change at independence.

Australia and New Zealand

Both are Blue Ensigns with the Southern Cross in the fly, both 1:2. Australia's cross has five white stars — four with seven points and a smaller one with five — and a large seven-pointed Commonwealth Star beneath the Union Jack, one point for each of the six original states and one for the territories. New Zealand's has four red stars edged in white, five-pointed, and nothing beneath the canton. The Australian design won a public competition in 1901, the year of federation; New Zealand's was made official in 1902. New Zealand voted on replacing its flag in a two-stage referendum in 2015–16 and chose to keep it.

Flag of Australia
Australia
Flag of New Zealand
New Zealand
Flag of Heard Island and McDonald Islands
Heard Island and McDonald Islands
Australia, New Zealand, and Heard Island and McDonald Islands — an uninhabited Australian territory shown under Australia's flag, so one design holds two cards in the deck.

Fiji, the Cook Islands, Niue and Tuvalu

Fiji kept the ensign at independence in 1970 but lightened the field to sky blue and put the shield from its coat of arms in the fly: a gold lion across the top holding a cocoa pod, and below it the cross of St George dividing sugar cane, a coconut palm, a dove and bananas. The Cook Islands use a proper Blue Ensign with a ring of fifteen white stars, one for each island. Niue is the odd one out: a golden yellow field, and a Union Jack that itself carries stars — a large yellow one in a blue disc at the centre and four small ones on the arms of the cross. Tuvalu's flag has a light blue field with nine yellow stars laid out like the islands on a map; it removed the Union Jack in the mid-1990s and restored it in 1997. Tuvalu is not in the deck, though — the map data behind the globe has no outline for atolls that small.

Flag of Fiji
Fiji
Flag of Cook Islands
Cook Islands
Flag of Niue
Niue
Fiji, the Cook Islands and Niue: a shield on sky blue, a ring of fifteen stars, and the only yellow field with a Union Jack.

The British territories in the deck

Eleven of the flags are British Overseas Territories, and eight of them are the classic pattern — a Blue Ensign with a shield or full arms in the fly — so the badge is the only thing to read:

The other three break the pattern. Bermuda flies a Red Ensign, the merchant colour, with a red lion holding a shield that shows the wreck of the Sea Venture. The British Indian Ocean Territory has no plain field at all — blue and white wavy stripes run across the whole flag, with a palm tree and a crown in the fly. And the card for Saint Helena, Ascension and Tristan da Cunha shows the Union Jack on its own: each of the three islands has a Blue Ensign of its own, but the territory as a whole, which is what the code and the outline cover, has none. Gibraltar's flag has no Union Jack, and Gibraltar is not on the globe in any case.

Flag of Anguilla
Anguilla
Flag of British Virgin Islands
British Virgin Islands
Flag of Cayman Islands
Cayman Islands
Flag of Montserrat
Montserrat
Anguilla, the British Virgin Islands, the Cayman Islands and Montserrat: the Caribbean Blue Ensigns.
Flag of Bermuda
Bermuda
Flag of Falkland Islands
Falkland Islands
Flag of Turks and Caicos Islands
Turks and Caicos Islands
Flag of British Indian Ocean Territory
British Indian Ocean Territory
Flag of South Georgia and the South Sandwich Islands
South Georgia and the South Sandwich Islands
Flag of Pitcairn Islands
Pitcairn Islands
Bermuda's Red Ensign, the Falkland Islands, the Turks and Caicos Islands, the wavy British Indian Ocean Territory, South Georgia and Pitcairn.

Who gave it up

Canada flew the Red Ensign with its arms until 15 February 1965, when the red maple leaf replaced it after a long and bitter debate in Parliament. South Africa's flag of 1928 carried a small Union Jack at its centre, alongside the flags of the two Boer republics; it lasted until 1994. Most colonies replaced their Blue Ensigns on the day of independence — Jamaica, Nigeria, Kenya and dozens more — and Hong Kong's went in 1997. Among those that kept the corner, the question comes back now and then: New Zealand held its referendum, Tuvalu changed and changed back, and Fiji's government announced a replacement in 2015 and shelved it the following year.

Flag of Canada
Canada
Flag of South Africa
South Africa
Flag of Jamaica
Jamaica
Canada, South Africa and Jamaica: all three once flew ensigns, none does now.

Hawaii, and the provinces and states that keep it

The one flag of a US state with a Union Jack is Hawaii's: the canton, and eight horizontal stripes of white, red and blue for the eight main islands. Hawaii was never a British colony; the flag comes from the Hawaiian Kingdom of the early nineteenth century, which had close ties with Britain, and accounts of exactly how the design came about differ. It survived annexation and statehood unchanged, and it is on the US states map.

In Canada, Ontario and Manitoba adopted Red Ensigns with their provincial shields in the mid-1960s, just as the country itself gave the Red Ensign up: Ontario's shield has the cross of St George above three gold maple leaves, Manitoba's a bison on a rock. British Columbia's flag stretches the Union Jack across its whole upper half with a gold crown at the centre, over a setting sun and wavy blue and white bars. Newfoundland and Labrador's flag, adopted in 1980, contains no Union Jack, but its blue, white, red and gold geometry was designed to recall one. All of them are on the Canada map.

Australia's six states all fly Blue Ensigns with a badge, and the badges do the work on the Australia map: New South Wales has a white disc with a red cross of St George, a gold lion in the middle and a gold star on each arm; Victoria the Southern Cross under a crown, with no disc; Queensland a light blue Maltese cross with a crown at its centre on a white disc; South Australia a piping shrike — a white-backed magpie with its wings spread — on a gold disc; Western Australia a black swan on a gold disc; Tasmania a red lion on a white disc. The two territories do not follow the pattern: the Northern Territory and the Australian Capital Territory have flags of their own without the Union Jack.

Try it

The whole set comes up in All flags, with most of the territories among the last few cards; the state and provincial ensigns are on the Australia, Canada and USA maps. Related: Flags that look alike for Australia against New Zealand, and Flag symbols for the stars and crosses.