It's in 'The English Folksinger', written by Sam Richards and Tish Stubbs, published in 1979 by Wm Collins;

Draw nigh my friends and neighbours, good news to you I'll bring
The fame of Admiral Nelson from shore to shore to sing.

For taking of the French fleet, likewise the Spanish too,
Here's success to Admiral Nelson and all his jovial crew.

The twenty first of October our ships to wind did lie.
A man from the topmast, my boys, a sail did chance to spy.

A sail, a sail, full twenty sail, there's thirty sail, there's more.
I'm sure they are the French fleet lying off the Spanish shore.

Down chests and up with hammocks, boys, your match tubs now prepare
And quickly form a line, my boys, to fight the proud Monsieur.

Fight on, fight on, my jolly tars, bold Nelson he did cry,
And like a valiant hero with sword in hand did die.

Our jolly tars like lions bold unto their quarters stood
Until the deck was covered o'er with many a brave man's blood.

But now the battle is over, our ships are under way.
Some we'll bring to Plymouth Dock and some unto Torbay.

And when that we have anchored along the British shore,
We'll drink success to George our king, and make the taverns roar.

If you need the tune as well I'll have to deal with that separately.