Sophie Iles (now known almost exclusively outside their legal name as Fio) is an artist and writer and has written several Short Trips audio stories for Big Finish Productions, including Time Lord Victorious Master Thief released in October 2020 featuring the first incarnation of the Master, and The Frosted Deer for the Bernice Summerfield Christmas Collection and Gallifrey War Room the First Days of Phaidon. They have also been a regular writer for Doctor Who Magazine as of January 2020.

Fio's art has found internet acclaim after their work first appeared in Doctor Who Magazine during the Doctor Who on Twitch event in 2018. Their illustrations have been used for The Raggedy Doctor by Amelia Pond, a short story written by Steven Moffat during the Doctor Who lockdown Eleventh Hour event for its 10th anniversary.

In October 2020 Fio created an A-Z Doctor Who Charity Stream on Twitch in support of FareShare UK, drawing for fourteen hours until they had drawn 26 different Doctor Who related things live for their audience. The results of which was $4,762 dollars.

Fio has also been a regular in charity anthologies and zines for both disciplines including both Doctor Who Appreciation Society's fanzines: Cosmic Masque and Celestial Toyroom. They has also edited their own, Mild Curiosities, dedicated to the memory of Jacqueline Hill. All proceeds went to Breast Cancer Now.

Fio now lives in London and dating fellow writer Georgia Cook and also works for the Lancet as an Editorial Assistant.

Sophie "Fio" Iles - they/them pronouns