Flags of the United Kingdom: the flags of England and of Scotland (since the Middle Ages) together with the flags of Wales (since 1959) and of Northern Ireland (1953–1972).
N.B.: Strictu sensu, this combination of flags was official between 1959 and 1972, but the banner of arms of the old Government of Northern Ireland (the "Ulster banner") continues to be used in some contexts; no official alternative exists.
This file was derived from:

 Flag of England.svg
Flag of Scotland.svg
Flag of Wales.svg
Flag of Northern Ireland (1953–1972).svg
Own work based on: Flag of England.svg: , Flag of Scotland.svg: , Flag of Wales.svg:   and Flag of Northern Ireland (1953–1972).svg: