He also played for the full Scotland national football team, scoring the winning goal against England in 1981 and against New Zealand in the 1982 FIFA World Cup.

Robertson had played for Scotland at Schoolboy and Youth levels and for Drumchapel Amateurs before joining Forest in May 1970, making his debut for the team in October 1970.

"[3] In his autobiography Clough noted that "Rarely could there have been a more unlikely looking professional athlete... [He was a] scruffy, unfit, uninterested waste of time...but something told me he was worth persevering with."

He had more ability than Ryan Giggs, his ratio of creating goals was better and overall he was the superior footballer", whilst Forest coach Jimmy Gordon rated Robertson as a better player than Tom Finney and Stanley Matthews, saying that he "had something extra on top".

[5] Robertson was sold to Derby County in June 1983 on a contested transfer (the fee was set by a tribunal) that soured the relationship between Clough and his former assistant Peter Taylor, but was injured soon after joining the team and failed to reproduce the form he had shown when he played for Forest.

[citation needed] Robertson's other daughter Liz appeared on the first ever episode of BBC's quiz show TNL: Who Dares Wins in 2007.