Flags based on British ensigns - Wikimedia Commons

Government Ensign of Alderney

Flag of Antigua and Barbuda (1962–1967)

Flag of Australia (1903–1908)

Flag of Australia (1908–present)

Flag of Australasian Anti-Transportation League (1851–1853)

Flag of the Bahamas (1904–1923)

Flag of the Bahamas (1923–1953)

Flag of the Bahamas (1953–1964)

Flag of the Bahamas (1964–1973)

Bangladeshi Coast Guard (1972–present)

Flag of British Bengal Presidency

Government Ensign of Bermuda (1910–1999)

Government Ensign of Bermuda (1999–present)

Flag of Cyprus (1922–1960)

British Diplomatic Ensign

Flag of British Guiana (1875–1906)

Flag of British Guiana (1906–1919)

Flag of British Guiana (1919–1955)

Flag of British Honduras (1870–1919)

Flag of British North Borneo (1882–1902)

Flag of British North Borneo (1902–1948)

Flag of British Somaliland (1903–1950)

Flag of British Somaliland (1950–1952)

Flag of British Somaliland (1952–1960)

Ensign of the British South Africa Company (1890–1923)

Canadian Blue Ensign (until 1965)

Flag of Cape Colony (1875–1910)

Flag of Cayman Islands (1999–present)

Ensign of the Northern Lighthouse Board

Flag of HM Customs & Excise

Flag of the Falkland Islands (1925–1948)

Flag of the Falkland Islands (1948–1999)

Flag of Falkland Islands (1999–present)

Flag of Dominica (1965-1978)

Colonial Flag of Fiji (1908–1924)

Colonial Flag of Fiji (1908–1924)

Colonial Flag of Fiji (1924–1970)

Fijian Government Ensign

Government Service Ensign

Government Ensign of Wales

Flag of Gilbert and Ellice Islands

Flag of Grenada (1903–1967)

Flag of Her Majesty's Coastguard

Colonial Flag of Hong Kong (1876–1955)

Colonial Flag of Hong Kong (1955–1959)

Colonial Flag of Hong Kong (1959–1997)

Ensign of British Indian Army

Naval Jack of Royal Indian Marine

Proposed flag for the Isles of Scilly (2002)

Proposed flag for the Isles of Scilly (2002)

Colonial Flag of Jamaica (1906–1957)

Colonial Flag of Jamaica (1957–1962)

Flag of Malta (1898–1923)

Flag of Malta (1923–1943)

Flag of Malta (1943–1964)

Flag of Mauritius (1906–1923)

Flag of Mauritius (1923–1968)

Metropolitan Police Service Ensign

Flag of New South Wales (1867–1870)

Flag of New South Wales (1870–1876)

Flag of New Zealand (1902–present)

Palestine Mandate Customs and Postal Services Ensign (1929–1948)

Flag of Royal British Legion

Flag of Queensland (1870–1876)

Flag of Queensland (1901–1953)

Flag of Rhodesia and Nyasaland (1953–1963)

Royal Engineers Ensign (British Army)

Flag of Saint Christopher-Nevis-Anguilla (1958–1967)

Flag of Saint Lucia (1939–1967)

Flag of Saint Vincent and the Grenadines (1907–1979)

Flag of Saint Helena

Flag of Scottish Fisheries Protection Agency

Flag of Seychelles (1961–1976)

Flag of Sierra Leone (1916–1961)

Flag of Singapore Crown Colony (1952–1959)

Flag of British Straits Settlements (1925–1946)

Flag of the Solomon Islands (1947–1956)

Flag of the Solomon Islands (1956–1966)

Flag of the Solomon Islands (1966–1977)

Flag of South Australia (1870–1876)

Flag of South Australia (1876–1904)

Flag of Southern Rhodesia (1923–1953)

Flag of Trinidad and Tobago (1958–1962)

Flag of Tristan da Cunha

Flag of Turks & Caicos (1968–1999)

Flag of Turks & Caicos (1999–present)

Flag of Victoria (1870–1877)

Flag of Victoria (1877)

Flag of Victoria (1901–1953)

Flag of Western Australia (1870–1953)