Nata a Londra, si è trasferita negli anni settanta a Los Angeles dove ha fatto la corrispondente per la rivista Sounds ed altre. Ha scritto numerose biografie come quella di Leonard Cohen appena pubblicata e attualmente collabora con la rivista Mojo.
Sylvie Simmons is a London-born, San Francisco based music journalist, named as a "principal player" in Paul Gorman's book on the history of the rock music press In Their Own Write (Sanctuary Publishing, 2001). A widely regarded writer and rock historian, she is one of very few women to be included among the predominantly male rock elite. She is also the author of a number of books, including biography and cult fiction.