4. Kathleen Winsor, ‘Forever Amber’ (1944)

Forever Amber is the original bonkbuster, whose commercial success led to Peyton Place (1956) and Riders (1985).

Banned in Ireland, Australia, New Zealand and Massachusetts as indecent, it sold millions of copies in the 1940s. Restoration England was the perfect backdrop for a lush, romantic romp but does the book deliver smut galore?

Tattered library copy, 2000 edition with foreword by Barbara Taylor Bradford