Walton was unseeded for the 2011 World Championship, but beat 16th seed Dave Prins 3–1 in the first round before being defeated by Martin Adams 4–3 in a sudden death leg. The match has already been touted as one of the best in the tournament's history. In 2011 season, he retained the English Masters beating Ross Montgomery in the final.
Walton did not have a seed for the 2011 World Championship but won his first-round match against Dave Prins 3–1 before losing to Martin Adams 4–3. The game was considered one of the tournament's best matches. In the same year, he retained the English Masters title by defeating Ross Montgomery in the final.