Gilbert and Sullivan came up with the suitably silly "he is an Englishman":

For he himself has said it
And it's greatly to his credit
That he is an Englishman,
He is an Englishman.

For he might have been a Russian,
A French or Turk or Prussian,
Or perhaps Italian,
Or perhaps Italian...

But in spite of all temptations
To belong to other nations
He remains an Englishman
He remains an Englishman.

Etc...

Then there's "The English are Best" by Flanders and Swan...

"The English, the English, The English are Best
I wouldn't give tuppence for all of the rest."

But then, I don't think anyone in England is bothered about wearing national dress? Anyone out there wear Morris kit to work? So why bother with a national song?

;)

English Jon