Carson's two-decade career included spells across England and Europe. Starting at Leeds United, he joined Liverpool in 2005, winning a Champions League medal as an unused substitute in the dramatic Istanbul final. To gain experience, he was loaned to Sheffield Wednesday, Charlton Athletic (where he was named Player of the Year), and Aston Villa.
Carson was later a first-choice keeper for West Bromwich Albion, Turkey's Bursaspor, Wigan Athletic, and Derby County, making over 170 appearances for the latter. In 2019, he joined Manchester City, primarily as a veteran third-choice. Despite minimal playing time, his leadership was highly valued, contributing to a period of immense success. At City, he won four Premier League titles, two League Cups, and the 2023 Champions League Treble. He also earned four caps for England and was part of the 2006 World Cup squad.