In the UK Championship, Walden reached the last 16 after knocking out Duane Jones, Jamie Jones, and Kyren Wilson before dispatched by the eventual finalist Shaun Murphy. In the next tournament, he reached the quarter final of the Scottish Open before losing to Cao Yupeng. He qualified for the World Snooker Championship after beating Joe Swail, Lee Walker, and Andrew Higginson in the qualifying rounds. He advanced to the second round of the tournament for the fourth time with a 10–6 victory over Luca Brecel, but eventually lost to Judd Trump by 13–9.