In August 2014, he reached the final of the Riga Open but lost 4–3 to Mark Selby. Two weeks later Allen won the Paul Hunter Classic defeating Judd Trump 4–2 in the final. He advanced to the final of the Shanghai Masters where he was beaten 10–3 by Stuart Bingham. At the International Championship, Allen led Mark Williams 7–4 by producing some of his best snooker which included a total of eight breaks above 50. However, Williams fought back to lead 8–7 before Allen came from 71–0 down and requiring two snookers to steal the next frame 73–71. Williams missed a tricky final red in the decider to allow Allen in to reach the final. In this match with Ricky Walden, there were never more than two frames between the players until from 7–7 Walden raced away to take the last three frames and condemn Allen to a second ranking event final defeat of the season. Despite taking a 3–0 lead over Rod Lawler with two centuries, Allen was knocked out 6–4 in the third round of the UK Championship.