By the way, the television adaptation of The Nine Tailors (Ian Carmichael) is somewhat different to the book. He did do an audiobook version of the book though which is faithful to the book. Although Edward Petherbridge did a few of the Peter Wimsey books, they didn't include The Nine Tailors.
The title comes from an old saying "Nine Tailors Make a Man" It refers to the nine strokes which at the beginning of the toll for the dead announced to the villagers that a man is dead.