I think at least one Ian McEwan should be on the list, probably Atonement, but Saturday, Enduring Love and Solar are excellent.
Rose Tremain is great, and I'd include Restoration.
For humour, some Wodehouse; I prefer Blandings to Jeeves but if you're not laughing out loud in the first 3 pages of any of them, you've lost your sense of humour imo. My Blandings omnibus is my go-to book when I'm feeling low.
Also Cold Comfort Farm (Stella Gibbons, I think)
Also on my list would be:
The Great Gatsby (F Scott Fitzgerald)
Scoop! (Evelyn Waugh)
The Wide Sargasso Sea (Jean Rhys)
At least one Graham Greene (my choice would be Brideshead Revisited, but I know it's not everyone's cup of tea, so Brighton Rock or The Honorary Consul)
Middlemarch
1984
Howard's End
Mrs Dalloway
The Buddha of Suburbia
The Tin Drum (this would actually make my top ten, and I wish my German was good enough to read it in its original language)
A John Le Carre, probably Tinker, Tailor etc
White Teeth
Cider With Rosie
And now for my shameful admission: I cannot, just cannot, read Dickens. Great characters, great stories but I lose the will to live during the long descriptive passages. I just can't get beyond the first 50 pages of any of them.
And I suspect that people might either be Hardy fans or Dickens fans. None of my Dickens loving friends can abide Hardy.