A posthumous memoir by Virginia Giuffre, one of Jeffrey Epstein’s most prominent accusers, has won the top prize at this year’s British Book Awards.

Nobody’s Girl, co-written with Amy Wallace, was named book of the year in a ceremony held in London on Monday evening.

The memoir, which was published six months after Giuffre took her own life, detailed her encounters with the late sex offender and his former girlfriend Ghislaine Maxwell.

Accepting the award, Giuffre's sister-in-law Amanda Roberts said the book was "a true testament to what a survivor's voice can do when finally given the space to be heard".

"She inspired millions, not just to be seen, or survivors to be seen, but she called us to action," Roberts told the ceremony in a video acceptance speech.