Hopkins was born in Manchester, but lived in Kenya from the age of five until she was eleven and her family returned to England.
His titles include Our Kid, Kate's Story, High Hopes, Going Places, Anything Goes, Whatever Next, Tommy's World and Big Mama.
She also wrote four stand alone novels for teenagers which are ''Holy Moley, I'm a Dead Dude'' for Chickenhouse, Playlist for a Broken Heart and Love At Second Sight and A Home for Shimmer for Simon and Schuster.
Cathy started writing for the older market with her first novel for adults which was published in March 2017 by HarperCollins and is called The Kicking the Bucket List.
Her fourth book for Harpercollins, A Vintage Friendship, was published as an e-book in August 2020 and was followed by the paperback in February 2021.