At least 100,000 people are thought to have watched the singer’s performance on Sunday (29 June) evening, packing the field in front of the Pyramid Stage.
Lionel - who followed in the footsteps of Dolly Parton, Tom Jones and Neil Diamond by occupying the traditional ‘legends’ slot - couldn’t believe the amount of people who had turned up to see him, repeatedly saying: "What the hell is going on?"
The set saw him rattle through some of his biggest hits, including ‘Dancing On The Ceiling’, ‘All Night Long’, ‘Easy’ and ‘Three Times A Lady’.
Lionel delighted fans with his back catalogue
The Who later brought the festival to a close with their headline set on the Pyramid Stage, following an epic three days of music at the Worthy Farm site in Somerset.
The rockers played a selection of their greatest hits, including ‘My Generation’, ‘Pinball Wizard’, ‘Baba O'Riley’ and ‘Won't Get Fooled Again’.
The Who brought the festival to a close
Watch a clip of Lionel’s set above, or see the highlights on BBC iPlayer.