Noting recommendations of Pure and Gillespie and I - I've really enjoyed other books by those authors, so will stick those on my list.
I didn't engage much with literary fiction this year - leaning more and more towards non-fiction. The fiction I most enjoyed was crime fiction:
Kingdom of Strangers by Zoe Ferraris (set in Saudi Arabia; really compassionate to the restrictions on both men and women - avoids simple condemnations.
The Assassin's Prayer by Ariana Franklin (main character is a female doctor in the time of Henry II)
Summer School by Domenia de Rossa (romance rather than crime. Thought it would be a fluff but unexpectedly loved it. An updating of Enchanted April).
I also really enjoyed crime by Ann Cleeves and Barbara Nadel. I raced through the Hunger Games trilogy (though wouldn't re-read) and YA fantasy by Joseph Delaney (the Spooks series).
The fiction I hated most was The Charming Quirks of Others, by Alexander McCall Smith. I've given him a few chances now and nope, still don't like it, so THAT'S IT.
Non-fiction I loved: Becoming Shakespeare, Survival of the Sickest, The Etymologicon, The Last Word (journalism by Ben MacIntyre), If Walls Could Talk (Lucy Wolsey), The Shadow of the Sword, Young Romantics (gorgeous! Loved, loved!) and The Better Angels of our Nature. I'm currently reading These Wonderful Rumours, the diary of a young schoolteacher in WWII, and really enjoying it - a cross between E M Delafield and Barbara Pym.
Disliked How England Made the English and Spell It Out (dull, dull).