Ros Horton and Sally Simmons have been friends and business colleagues for over 30 years. They first met when they worked at Cambridge University Press where they were pursuing marketing and editorial careers. Several years down the line, married and with grown-up children, they founded their company Cambridge Editorial, which provides book production services for clients around the world. They are the authors of Women Who Changed the World and the best-selling Speeches That Changed the World. When they're not working, Sally likes to adopt elderly dogs and work on her hulahooping, while Ros indulges her passion for a cappella singing and playing ukulele in a gypsy jazz band.

Ros Horton and Sally Simmons have been friends and business colleagues for over 30 years. They first met when they worked at Cambridge University Press where they were pursuing marketing and editorial careers. Several years down the line, married and with grown-up children, they founded their company Cambridge Editorial, which provides book production services for clients around the world. They are the authors of Women Who Changed the World and the best-selling Speeches That Changed the World. When they're not working, Sally likes to adopt elderly dogs and work on her hulahooping, while Ros indulges her passion for a cappella singing and playing ukulele in a gypsy jazz band.