In what novel by whom does the church of Saint James the Least of All appear?

[Zulagrat]

The title and author of a very funny novel about an objectionable young religious fanatic and his insufferable father who move from the church of Saint James to that of Saint James the Less and finally to Saint James the Least of All. A Penguin reprint had an introduction by Anthony Burgess.

[Quizmonster]

If you click here, that will link you to a web-page which seems to answer your question. Once there, just click on Chapter 1, 2 and so on to read the story.