He advanced to the quarter-final of the Paul Hunter Classic losing 4–3 to Kyren Wilson. Wells reached the semifinal of a ranking tournament for the first time at the 2018 Scottish Open, and despite leading 4–0, and 5–2 over Mark Allen he lost 6–5. He advanced to the four round of both the English Open, Shoot-Out and Gibraltar Open, losing 4–3 to Ali Carter, 1–0 to Rod Lawler and 4–3 to David Gilbert respectively.