Blue with the red cross of Saint George (patron saint of England) edged in white superimposed on the diagonal red cross of Saint Patrick (patron saint of Ireland) which is superimposed on the diagonal white cross of Saint Andrew (patron saint of Scotland). Known as the Union Flag or Union Jack.
National Anthem: Click here to listen to it! 

God save our gracious Queen!
Long live our noble Queen!
God save the Queen!
Send her victorious,
Happy and glorious,
Long to reign over us,
God save the Queen.

O Lord our God arise,
Scatter her enemies,
And make them fall;
Confound their politics,
Frustrate their knavish tricks,
On Thee our hopes we fix,
God save us all.

Thy choicest gifts in store
On her be pleased to pour;
Long may she reign.
May she defend our laws,
And ever give us cause,
To sing with heart and voice,
God save the Queen.

This Information comes from the CD World-Info'95.