I agree with many of these!
@Michaelbaubles You're spot on about Sophie Hannah's police characters. I really enjoy Sophie Hannah but I find myself skimming over the police bits to identify anything relevant to the plot because I have no interest in their personal relationships/character development.
Terry Pratchett - I've tried many times to read his books, as my husband is a huge fan (and so was an ex) but I just can't get into them at all.
JK Rowling - again, couldn't get into them. Perhaps you have to read them first as a child, or else have children to read them to, to enjoy them.
JoJo Moyes - tried one found the writing style really annoying - the characters annoying - wanted to throw the book across the room (it called was 'Me before You' I think).
Jodi Piccoult - I have enjoyed some of her writing, but I started to find her books getting very samey - too many prison scenes that went the same way. Also too much rhapsodising over how great and smart and quirky the children are. Yes, parents think their children are wonderful - we can take that as a given - we don't need it reinforcing in every chapter.
Not many I disagree with on this thread except Kazuo Ishiguro, Charlotte Bronte, Thomas Hardy and Liane Moriarty.