Hadley's career began in 1974 by winning a talent contest. In 1979, he teamed up with the two brothers Gary and Martin Kemp and created the band Spandau Ballet, the world's great success celebrated in the 1980s, among others, with titles such as True (1983 ), Gold ( 1983) Only When You Leave (1984).
After the dissolution of Spandau Ballet in 1990, Hadley built on a solo career. In 1992 his debut album, The State of Play, from the three moderately successful singles were released. In collaboration with the British House band Tin Tin Out 1997, the single Dance With Me, with the Hadley once again made it into the charts created. In the same year he released his second album, Tony Hadley, which mainly contains cover versions. In 1999, he toured as a singer with Alan Parsons on The Time Machine tour through Europe.
2003 Hadley was the winner in the reality television series Reborn in the USA of the British TV channel ITV from late January to mid-April 2007 he played at the Cambridge Theatre in London's West End, the lawyer Billy Flynn in the musical " Chicago ". Since mid-2007, he presents the " Tony Hadley Party Classics " at Virgin Radio.
From 1983 to 2003 Hadley was married to his childhood sweetheart Leonie. The marriage produced three children: Thomas, Toni, and Mackenzie. With his current partner Alison Evers, with whom he has been married since 2009, he also has two children: Zara and Genevieve.