He departed in 1973 to pursue solo ventures, including a stint fronting Black Sabbath, before returning to Deep Purple in 1984.
After a second exit in 1989, he rejoined three years later and has led the group continuously since.
Today’s lineup alongside Gillan comprises Glover, 80, Paice, 78, keyboardist Don Airey, 78, and guitarist Simon McBride, 47.
The European leg is currently set to resume on 3 November in Dortmund, wrapping up at London’s Royal Albert Hall on 25 November before a December run through Latin America.