Ros Asquith contributes a regular cartoon feature to The Guardian and achieved fame world wide for her Teenage Worrier books (realistic and funny explorations of teen problems and how to solve them) and the Trixie Tempest books aimed at the "tween" market of readers between the ages of nine and twelve. Her book Letters from an Alien Schoolboy was shortlisted for the Roald Dahl Funny Book Prize and The Great Big Book of Families, with Mary Hoffman, won the School Libraries Association Prize.
An honours graduate of Camberwell Art School, Asquith worked in graphic design and mural painting before moving into cartooning in the 1980s. She has also served as a theatre critic for several English periodicals. Since 1990 she has been well established as a cartoonist, author, and illustrator.