In the novel Allnutt sings a line from "Give my Regards to Leicester Square"

"Then he mourned over his own expatriation, and he sobbed through his hiccups at the thought of his boyhood friends in London. He began to sing, with a tunelessness which was almost unbelievable, a song which suited his mood -

"Gimmy regards ter Leicester Square,
Sweet Piccadilly an' Myefair.
Remember me to the folks darn there;
They'll understa-and."

He dragged out the last note to such a length that he forgot what he was singing, and he made two or three unavailing attempts to recapture the first fine careless rapture before he ceased from song."

[Forester, C.S., The African Queen, (Boston: Random House, 1930, p.83)]