It took me a while to realise that Cheerful Weather for the Wedding by Julia Strachey was a black comedy and it certainly had its amusing moments, but I didn't engage with any of the characters and if you're not rooting for a character it's difficult to care about the book.
I also thought that the motif of a bride who gets drunk on her wedding day has been done before (and better) in The Great Gatsby by F Scott Fitzgerald.
Ah well, time to browse through the Persephone catalogue again - I knew I should have ordered the Katherine Mansfield Journal!