McGill began the season with a 5–3 loss to John Higgins in the first round of the Wuxi Classic. He reached the semi-finals of the Riga Open after beating Judd Trump 4–3, but lost in another final frame decider against Mark Allen.&lt;ref name="2014/15"&gt;&lt;/ref&gt; McGill eliminated both Michael Georgiou and Igor Figueiredo by 6–4 scorelines at the UK Championship and then came back from 4–1 down against Nigel Bond to triumph 6–5. He reached his first UK quarter-final by holding on to beat John Higgins 6–5 after being 4–1 up, but attributed the win to Higgins' bad form rather than his own good play. McGill then lost 6–4 to Ronnie O'Sullivan after being 2–0 ahead and admitted he had blown his opportunity to knock out the four-time UK champion after failing to capitalise on the many chances that came his way during the game. However, he did break into the top 32 in the rankings for the first time after the event. McGill finished 21st on the European Order of Merit to play in the Grand Final and overcame Peter Ebdon 4–1 in the first round, before losing 4–3 to Joe Perry.