In French

For context, I lived in France for few years, so have a decent grasp of French. I recently read Moi qui n'ai jamais connu les hommes by Jacqueline Harpman and absolutely loved it. It reminded me how much I enjoy reading in French.

Now that I'm back in the UK, though, I have no idea where to find good French language books. Any fiction recommendations, or must-read authors?