Claire started her career in non-fiction publishing before getting distracted by the digital world. She spent five happy years commissioning arts and culture projects that use new technology, then set up a mass-participation project to encourage people to sow native varieties of wild flowers for the Royal Botanic Gardens, Kew in London. She is currently Head of Copy at Quietroom, a team of business writers, trainers and strategists.
Walker published her first picture book, This is The Kiss, in January 2017. Agora Books published her middle grade series in the Fall of 2020; the first installment, Hattie Brown versus the Cloud Snatchers, came out in September 2020, followed by Hattie Brown versus the Elephant Captors and Hattie Brown versus the Red Dust Army in October 2020.