Much of her childhood was spent in the south-west of England. At the age of 10, she moved with her family from Somerset to Jordan Manor, an isolated, six-bedroom thatched Devon long house set within of land in a Dartmoor valley. She was rather isolated and she occupied her time reading and writing. Her works written as a teenager were rejected by publishers, but she was convinced she would be an author. Briscoe's parents took her out of primary school at the age of ten and arranged for her to be home-schooled by an unqualified teacher at a nearby farm. Many of the lessons were out-of-doors on Dartmoor. At the age of 13 years she returned to mainstream schooling at King Edward VI Community College, the localsecondary school in Totnes, where she specialized in English in the sixth form.
Career
Briscoe attended University College London before working for several years as a freelance journalist. Her short stories have featured in several anthologies, and she has contributed widely to publications that include The Guardian, The Independent,The Observer, and The Sunday Times and broadcasting on BBC Radio 4. Her first novel Mothers and Other Lovers, in which a teenage girl tries to escape from a stultifying rural life, only to fall in love with her mother's new female friend, won a Betty Trask Award. Briscoe spent a lot of time in New York researching her second novel, Skin, a runner-up for the Encore Award. This explored the plastic surgery and psychological toll taken on women by the beauty industry. Briscoe's third novel, the psychological thrillerSleep With Me, published in July 2005, is according to author and critic Jonathan Coe "a beautifully written and emotionally candid novel which also happens to be a page-turner." It has been published in several languages and shortlisted for the Prince Maurice Award. Sleep With Me was adapted for ITV Drama by Andrew Davies and starred Adrian Lester, Jodhi May, and Anamaria Marinca. Her fourth novel, You, was published in July 2011, and after being selected as a Kindle "daily deal" on 2 December 2011, went to the top of the Amazon Kindle best-seller ranking for that day.
Personal life
Briscoe lives in North London. She has two children.