Britain Simons was born in Durango, Colorado to Kelly Roelke, a photographer, and David Simons, an architect. He has one sibling, an older sister, Gentry Simons. Having no connection to the entertainment industry, Britain gained steady success as an Actor, Online Educator and dedicated Content Creator, on social media. He built a community of over 323K members.

Britain auditioned for his first theater production, at 14, to conquer a fear of public speaking. While working to earn scholarships, he found a home in regional theater. He performed in choir, with the Carnegie Hall Singers in NYC. In 2010, he earned a full ride scholarship as a Daniels Fund scholar to attend Baylor University. Deviating from the family tradition of architecture and engineering, he studied theater performance and design.

He graduated with his Bachelor of Fine Arts degree in Theater Studies in 2014 from Baylor University, in Waco, Texas. He attended The National Theatre Institute (NTI) at the Eugene O'Neill Theater Center in Connecticut, NYC. He also spent a short time in St. Petersburg, Russia with The State Theater Arts Academy, in partnership with NTI. During his studies, he performed in regional theatre productions such as Romeo, in Shakespeare's Romeo and Juliet.

In 2014, he began building a career in film, television and commercials. In Los Angeles, he continued to study acting, by training with John Kirby, known for coaching stars like Jim Caviezel and Cameron Diaz. His first commercial appearances included Toyota Concept-i future vehicle and the War Dragons popular gaming app. He performed in music videos for Calum Scott's hit release "Dancing on My Own" with over 551 Million views, Bleachers "Alfie's Song" from the movie Love, Simon (2018), and more.

Britain's television debut was an appearance on the Lifetime Television movie Online Abduction (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. 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 also landed the leading voice over role of Daichi in the Ultraman 50th anniversary feature film Ultraman X: Here He Comes! Our Ultraman (2016), a popular Japanese title.

Most recently, Britain can be seen on the show Penny Dreadful: City of Angels (2020) and That '90s Show (2023). He has garnered a following on social media, with over 42K followers across platforms, including TikTok and can be seen acting in commercials, such as Motorola, 5 Hour Energy, and playing the Badge Badger in State Farm adverts.