In 2015, Gannon landed a book deal off the back off her then blog Girl Lost In The City, called Ctrl Alt Delete: How I Grew Up Online. Her first book Ctrl Alt Delete came out in 2016 with Ebury, Penguin Random House. In 2017, Gannon signed a book deal with Hodder & Stoughton for The Multi-Hyphen Method, ‘a new business book for the digital age’ which became a Sunday Times Business Bestseller. It also became an immediate no.1 Amazon bestseller and was endorsed by Richard Branson. The Independent voted it one of the ‘10 best business books by women’.
