At age seven, Erin landed the role of Molly in the theater production of Annie and won 'Britain's top young writer' contest and her career was launched in the UK within the entertainment world. She was still in high school when she landed her first television role in the popular television series, "Taggart." Erin went onto attend The Royal Academy to study performing arts and script writing. Afterwards she went on to study business and media studies. Shortly after she landed a role in the award winning hit television series, "Footballers' Wives," which led to the launch of her successful career within acting. Soon, by combining her many contacts in the entertainment and modelling worlds with her determination, she created the Erin Gavin Talent Agency (EGA), which has become one of the United Kingdom's leading providers of entertainment, models, dancers and Film & television background artists. Erin's career has had an eclectic career in motion pictures, television series, theatrical productions, print and live-action commercials. She's worked with a remarkable list of directors and actors, including David Schwimmer, Michelle Pfeiffer, Paul Rudd and Elijah Wood. Erin's most recent credits include starring as Marilyn Monroe in hit U.S. play Marilyn My Secret, Valerie in the thriller, "Dread," directed by Anthony DiBlasi, Rola in the comedy, "Junk," directed by Kevin Hamedani. She also starred and produced as Marilyn in Marilyn and Sinatra which toured the US and UK. Erin has recently received rave reviews for her performances as Marilyn Monroe and Marlene Dietrich. Erin Gavin met Sean Scott McCracken during her first stage play as Marilyn Monroe. At the time Sean played Bobby Kennedy. Shortly after they became off screen partners. 
In addition to her acting career and owning successful UK companies (EGA & EGProperty), Erin has negotiated successful investment deals for motion pictures. These negotiations include the Karl Urban comic book adaptation and a successful video game for Tweens.
In 2019 Erin signed with Serdica Records (Classical contemporary) label and her first song 'I'm through with love' has been a global success. Erin's interpretation of the song 'Santa Baby' was scored on a global make up brand commercial along with Artist Trew's latest table book campaign. Erin is currently writing and working on a collaboration for her next album as well as some original Marilyn Monroe's songs to finish her 1950s EP. T


In 2018 Erin was awarded 'Ambassador of Arkansas' for her contributions to the USA as well as being asked to give  keynote speeches at Stanford University, Silicon Valley's large Entrepreneur convention, Clinton Foundation and many others around the globe.  
Recently, Erin wrote, produced and directed her first short film and her first documentary. Erin has continued for over decade to write for various house hold name tabloids and magazines featuring her own column.   
She is also lover of martial arts in which she has a black belt in Shotokai Karate.