Britain David Simons was born in Durango, Colorado to Kelly (Roelke), a photographer, and David Simons, a contractor and architect. He has one sibling, an older sister, Gentry Simons. His parents separated when he was four and divorced a year later. He relocated to Montrose, Colorado with his mother where he grew up. Both he and his sister were the first children in the family to earn university degrees.
As a teen, Britain discovered community theatre. He auditioned for his first school production at 14 to conquer a fear of public speaking, landing the leading role of Snazzy Mitchell in Life of the Party. While working to earn scholarships in high school, he found a home in competitive speech team, choir, and community theatre while preparing for a life as an engineer. He traveled to New York with the Carnegie Hall Singers, represented Colorado at the National Youth Leadership Forum on National Security in Washington D.C., and earned a nomination as a Daniels Scholar for his academics, community involvement, and accolades. Upon learning he was one of 200 student recipients of the Daniels Fund Scholarship, a full ride, he made the decision with his parents to pursue acting and bachelors degree, after graduating with his diploma.
He graduated with his Bachelor of Fine Arts degree in Theatre Studies in 2014 from Baylor University, in Waco, Texas. He also attended the The National Theatre Institute (NTI) at the Eugene O'Neill Theater Center in Connecticut, NYC and he spent a short time in St. Petersburg, Russia with The State Theater Arts Academy. During his studies, he performed in regional theatre productions such as Romeo, in Romeo and Juliet. In his first film, he played the antagonist in the award-winning indie short, Surgery (2013). Simons subsequently appeared in numerous films while attending university full time. He also appeared in his first regional commercial for the local Pappa Rollo's Pizza.
In 2014, he began building a career in film, television and commercials. In Los Angeles, he quickly landed agency representation, and continued to hone his craft for film by training with John Kirby, known for coaching stars like Jim Caviezel and Cameron Diaz. His first commercial appearances included Vivo's popular V3 smartphone, Toyota Concept-i future vehicle "More Love from Cars," and a series of commercials for the War Dragons popular gaming app. Soon to follow, he performed in music videos for Showtek with over 6 million views, the Awakened Lover in Calum Scott's hit release "Dancing on My Own" with over 350 Million views, and credited as as Dr. Clayton Hunt in Bleachers - "Alfie's Song" from the movie Love, Simon (2018).
Britain's television debut was an appearance on the Lifetime Television movie Babysitter's Black Book (2015) with a single line as the Food Truck Boy. Soon after he earned the supporting role of Ben in another Lifetime Television feature film Cyber Case (2015) (aka Online Abduction) alongside Brooke Butler, directed by Steven R. Monroe. He made appearances in shows like Murder Book (2015), Unusual Suspects (2010), and Disney Descendants: School of Secrets (2015) playing Prince Ben, and earning his Screen Actors Guild card. It premiered on the Disney Channel in support of the summer movie event, Descendants (2015). In 2016, he landed the supporting role of Handsome Boy in the critically acclaimed horror film, Holidays (2016), directed by Kevin Kölsch. He played Patrick in the short Prom (2016) written and produced by Hasan Minhaj based on Minhaj's experiences in high school. He played another prince as Prince Daniel in the upcoming film Overlords of Magick (2018) directed by Sherman Hirsh. He also landed the leading voice over role of Daichi in the Ultraman 50th anniversary feature film Ultraman X: The Movie (2016), a popular Japanese title.
Most recently, Britain can be seen acting in commercials, such as Motorola, Toyota Christmas, and playing the Badge Badger in three State Farm adverts. In Los Angeles, he took on the comedic role of Peter Parker aka Spider Man in the new web series SuperHeroes In Therapy (2019). He hit the ground running, before the Covid 19 epidemic, with his role as "Assistant" in episode "Sing, Sing, Sing" on the new series Penny Dreadful: City of Angels (2020) on Showtime.