This is the version recorded by Vulcan's Hammer in 1973, with Phil and Kay singing alternate verses:

KEYS OF CANTERBURY

Oh madam, I will give to you the keys of Canterbury,
And all the bells of London shall ring to make us merry,
If you will be my joy, my sweet and only dear,
And walk along with me anywhere.

I shall not, sir, accept of you the keys of Canterbury,
Nor all the bells of London shall ring to make us merry.
I will not be your joy, your sweet and only dear,
Nor walk along with you anywhere.

Then, madam, I will give to you a pair of boots of cork,
Though one be made in London, and the other made in York.....

I shall not, sir.....

Then, madam, I shall give to you a little silver bell
To ring for all your servants and make them serve you well.....

I shall not, sir.....
To ring for all my servants and make them serve me well.....

Then, madam, I will give to you a gallant silver chest,
With a key of gold and silver, and jewels of the best.....

I shall not, sir.....

Then, madam, I will give to you the embroidered silken gown,
With nine yards a-dangling, and a train unto the ground.....

Oh sir, I will accept of you the embroidered silken gown.....

(sung as a duet) And I/you will be your/my joy.....