Katie is the second child of Sir David Amess. She trained at the prestigious Royal Central School of Speech and Drama in London whose alumni includes Sir Lawrence Olivier, Dame Judi Dench, Harold Pinter and Vanessa Redgrave. She is a recipient of the Helen Mirren Acting Award and was selected for two consecutive years as one of BAFTAs top British Newcomers.
Katie just appeared as Ulcie at The Geffen Playhouse in Rolin Jones & Jackson Gay's These Paper Bullets. She also played Brenda Dixon in Ray Cooney's Cash on Delivery in Los Angeles alongside Ray himself. In 2014, Katie was cast as Lulu in William Friedkin's 'The Birthday Party' at the Geffen Playhouse opposite Tim Roth, Frances Barber and Stephen Berkoff.
Katie competed in several international beauty pageants and won the title of Miss Essex in 2008 for the Miss Earth contest. In the same year she also became a finalist for the Miss England competition. She has appeared in a host of TV commercials including Nintendo, Just Dance 3 & 4, Wen Haircare, Premier Inn and News of the World.