"All I Need to Know" is a song by British singer-songwriter, Emma Bunton. It was released as the second and final single from her third solo album, Life in Mono (2006). The song was co-written with Jamie Hartman, who is notable for previously writing the hit "All Time Love" for Will Young. First announced by her official site, the single was released physically on 12 February 2007 in the United Kingdom and Ireland. It was also available to download from 5 February 2007. The physical release of this single is a two-track CD, with a remix being available only as an iTunes exclusive. The single entered the UK Singles Chart in the week of 24 February 2007 at number 60 and charted for only one week before falling out, making it the lowest charting single of Bunton's career at the time.