Where in the world?
The flag of the United Kingdom — the Union Jack — has a blue field. It features the white-edged red cross of Saint George superimposed on the diagonal red cross of Saint Patrick which is superimposed on the diagonal white cross of Saint Andrew.

United Kingdom

Native Name: United Kingdom

Population: 69,281,437

Region: Europe

Sub Region: Northern Europe

Capital: London

Currencies: British pound

Top Level Domain: .uk

Languages: English

Border Countries: Ireland