If you're theming England, then I'd forget about "Black and Tans", "Fields Of Athenry" and "Bard Of Armagh".

Drinking songs are a good bet - "Drink Old England Dry" or "Fathom The Bowl". Military or recruiting songs like "Rout of The Blues", "High Germany". Rural idylls like "Foggy Dew" (not the Irish rebel song) and "Pratty Flowers". Old broadsides like "Maria Marten" or "Jack Hall". The list is endless ...

You could even sing some traditional Norfolk songs like "The Black Velvet Band" or "The Wild Rover"

;-)