Ya know what Goodreads needs? Negative scores!
I'll keep this brief:
I kind of liked big-hearted Ellie, whose good nature everyone takes advantage of, through the wedding, so quite a long way into the book.
But then class reared its ugly head, as it does so often in British fiction, once Ellie came face-to-face with poor people, who do nothing but lay about drinking, smoking, playing loud rap music, sponging off the system, and doing crimes. Ellie sits quietly in the church, communes with Jesus, and comes out judging everyone. Judge not lest ye get one star on Goodreads, Ellie.
From a whodunit standpoint, it's a wasteland. We don't really meet the perpetrators until the very end, so no chance to solve along; the ending relies on a ludicrous string of coincidences, and the motive (and raison d'être for the big reveal) relies on the evildoer being mad as a hatter. Which lets the whole thing off from making sense.
It's more of a soap opera than a murder mystery, as Heley hits her stride in lengthy discussions of domestic life, cooking, cleaning, redoing apartments, shopping, clothes, and etc.
Recommended for middle-aged bourgeois bigots.