The 65-year-old rose to international fame as the lead singer of the new wave group, delivering iconic hits including True, Gold and Through The Barricades.
Mr Hadley is renowned for his powerful, expressive vocals and has enjoyed a successful solo career since leaving the band, whilst also pursuing stage work and radio presenting.
Now, the singer has opened up about splitting from Spandau Ballet during a new interview with Blue News.
Mr Hadley was asked what it was like for him to leave the group and whether it was emotionally difficult.
He replied: “Not really. I just reached the point in 2017 where I knew I couldn’t do it anymore.
“I’ve been a solo artist for much longer than I’ve ever been part of Spandau Ballet.
“I have great musicians around me, I’m working on a new big band album and touring worldwide – I love where I am today.”
Formed in 1979, the original line-up featured brothers Gary Kemp (guitar and principal songwriter) and Martin Kemp (bass), alongside Tony Hadley (lead vocals), Steve Norman (saxophone and guitar) and John Keeble (drums).
Their 1983 album True established them as global stars, with the title track becoming a signature song that enjoyed renewed popularity through its use in films, television and advertising.
After splitting in 1990, the band reunited in 2009, touring extensively and releasing the documentary Soul Boys of the Western World in 2014.
Hadley departed in 2017, and the remaining members later introduced singer Ross William Wild before the group again became inactive.
Following Spandau Ballet’s original split in 1990, he pursued a solo career, releasing albums, touring internationally and performing with orchestras and big bands.
He rejoined the band for its 2009 reunion before announcing his departure in 2017.
Since then, Hadley has continued to record and perform as a solo artist, appearing regularly at concerts, festivals and special events.