[2] Other recognition included Los Angeles Times All-Region San Fernando Valley, Super Prep All-American, and PrepStar All-West honors.

[3] In addition to playing football, Britton also lettered in basketball and track, setting school records in shot put and discus.

[2] Playing the 2008 season at left tackle, Britton registered 111 knockdowns and 17 touchdown-resulting blocks, leading the conference as well as setting school records in both categories.

[2] In a draft loaded with talented offensive linemen, Britton was considered to be one of the better players available,[5] drawing comparisons to Joe Thomas.

"[7] In an effort to rebuild their offensive line, the Jaguars selected Eugene Monroe and Britton with their first two picks in the 2009 NFL draft.

[10] After signing a four-year, $4.6 million deal with the Jaguars on August 1, 2009,[11] Britton entered into a preseason battle with Tony Pashos for the starting right tackle position.

[12] After winning out the competition, Britton and Monroe became the first pair of rookie offensive tackles to start together on opening day since the 1982 NFL season.

[16] Britton missed the entire 2011 preseason and the first game of the regular season after undergoing surgery during training camp to repair a herniated disc.

[21] After missing most of training camp and the preseason with a hamstring injury he was released as part of final roster cuts, only to be re-signed one week later after two of the Bears starting offensive lineman were injured in the season opener.

Britton says he used cannabis as a preferred method of pain management during his football career,[15][26] and has cited the health risks associated with pharmaceutical painkillers as a reason why players should not be punished for choosing a natural alternative.

Britton says that in addition to relieving the pain of his injuries, cannabis also improved his mental concentration on the football field, and that the games he played after using were some of his best performances.

[39][40] Britton's maternal grandparents are author Richard Gehman and actress Estelle Parsons, who won the Academy Award for Best Supporting Actress in 1967 for her role in Bonnie and Clyde, and who furthermore gained recognition for her role as Bev Harris in popular situation comedy television program Roseanne.

[13] In 2018, Britton appeared in the Netflix documentary Take Your Pills in which he discusses his use of Adderall to treat ADD and to improve focus while he was in the NFL.