In 1999, John Keeble, along with fellow band members Tony Hadley and Steve Norman, attempted to sue former Spandau Ballet guitarist, Gary Kemp, for alleged unpaid royalties. They claimed that an agreement had existed between Kemp and the rest of the band, whereby Kemp, who was the main songwriter in the band, would pay his bandmates a share of the royalties earned. The claims were vigorously denied by Kemp, and Keeble, Hadley and Norman subsequently lost their court case. Although initially vowing to appeal the verdict, they later decided against this.
Keeble has consistently played in the Tony Hadley band, and was on tour throughout 2006. He also played drums on Fish's 1989 hit single "State of Mind".
He has also formed his own band, I PLAY ROCK, with whom he plays drums.
On 25 March 2009, John Keeble joined the rest of his original classic-line-up Spandau Ballet bandmates for a press conference at HMS Belfast, to announce that the band had reformed for a world tour starting in Dublin in October 2009.