Holt is 6' 2" (1.88m) tall.
In addition to his television and movie work, Holt has appeared in stage productions of Biloxi Blues, Bovver Boys and A Terrible Beauty.
Holt is a supporter of the Teddy Atlas Foundation.
Holt is represented by the Metropolitan Talent Agency in Los Angeles.
In addition to his screen work, Holt has provided his voice for the video games Fight Club and Star Wars: Demolition.