The Allisons represented the United Kingdom in the Eurovision Song Contest 1961 with the song "Are You Sure?". They came second with 24 points. The song was released as a single on the Fontana label, and climbed to number 1 on the UK "NME" pop chart, while in the chart compiled by the Official Charts Company the song spent six weeks at number 2 and a further three weeks in the top 4. "Are You Sure" sold over one million records, earning a gold disc. In Germany the single reached number 11. Despite a couple of minor follow-up hits, the duo disbanded in 1963.