With the runaway success of Bohemian Rhapsody, detailing the lives and loves of Freddie Mercury, it was more a matter of when, not if, the equally flamboyant Elton John would have his fairytale recited.

Rocketman is the explosive, razzamatazz result and, like Bohemian Rhapsody, will surprise and delight the icon's aficionados, as it lifts the lid on Elton's turbulent early life and success.

"It's a warts 'n' all exposé," acknowledges Richard Madden, who plays Elton's first lover and former manager, John Reid. "We really get into all the different elements of him; his vulnerabilities, his nastiness, his outrageousness – you