I've just noticed the first verse was omitted from lyrics Lizzie posted above. The downloaded version of the song starts:

Now it's been twenty-five years or more
I've roamed this land from shore to shore
From Tyne to Tamar, Severn to Thames
From Moor to Vale from Peak to Fen
Played in cafes and pubs and bars
I've stood in the street with my old guitar
But I'd be richer than all the rest
If I had a pound for each request
For "Duelling Banjos", "American Pie"
It's enough to make you cry
"Rule Britannia" or "Swing low",
Are they the only songs the English know?