More than 100,000 fans flocked to hear the music icon perform such hits as 'Hello', 'Dancing on the Ceiling' and 'All Night Long' on Sunday afternoon, and now 19,000 keen listeners have scooped up his compilation album 'The Definitive Collection'.
This is sweet success for Lionel, marking his first number one album in the UK in 23 years. It is also the very last number one album to be announced on Sunday. From this week, the charts for both singles and album sales will be released on Fridays.
Of his double triumph, Lionel says: "I was overwhelmed performing at Glastonbury in front of all those people and for the fans to make the album No.1 is unbelievable. The UK has always been a special place for me, thank you, I love you all."
Lionel's incredible career has thus far seen him sell more than 100 million albums, and collect five Grammy Awards, a Golden Globe and even an Oscar. He also co-penned, along with Michael Jackson, the record-breaking 'We Are The World' charity anthem in 1985.
This summer, Lionel continues to perform at festivals across the country including an appearance at Henley Festival on 9 July and a performance at Edinburgh Castle on 22 July.
Lionel is one of the headliners for this year's Henley Festival - more info here.