Nina Stibbe’s first book, Love, Nina, was a hugely clever and funny memoir based on the letters she wrote home to her sister in the 1980s while working as a nanny for London Review of Books editor Mary-Kay Wilmers. It became a bestseller and was later adapted into a BBC series starring Helena Bonham Carter. She followed it with five excellent novels, and then another memoir – a sequel to Love, Nina titled Went to London, Took the Dog about being back in the capital as a sixty-something on a trial separation from her husband. But which are the memoirs...