Having been overlooked for four matches that followed, Liddell was re-called by the SFA after a 7–2 loss to England at Wembley. He returned as an outside left and scored one of Scotland's three goals against Portugal on 4 May 1955. His involvement in the tour of Yugoslavia, Austria and Hungary later in the month proved eventful. In a 2–2 draw with Yugoslavia, Liddell received a black eye when accidentally punched by goalkeeper Vladimir Beara while attempting a header. He scored his last goal for Scotland in an ill-tempered 4–1 win over Austria at Praterstadion, where a brief pitch invasion involving large numbers of supporters reportedly resulted in altercations between players and fans. Late in the match against Hungary, Liddell missed his second penalty for Scotland while the side were losing 3–1 to the "Golden Team". During his career with Liverpool, Liddell converted 34 of his 41 penalties.