McCartney, one of the greatest songwriters of the 20th century in his Beatles partnership with the late John Lennon, will play the coveted slot one week after turning 80.

Jack Sunderland, 22, was in position from 0700 am. He said McCartney had inspired him to become a musician.

"He's a hero," said Sunderland, who works as a funeral director. "Everyone would want to see a living legend like him."

Henry Thurgood had dressed in a copy of the aquamarine suit McCartney sported on the sleeve of 1967's "Sgt. Pepper's Lonely Hearts Club Band" for the occasion.

"I've not seen him live before, so this is a big moment for me," the 27-year-old said.

McCartney, who first performed at Glastonbury in 2004, had been due to take part in the fiftieth anniversary edition of the festival in 2020 before it was cancelled because of the COVID-19 pandemic.

Co-organiser Emily Eavis said in March that his performance would be "a huge moment". "It means the world getting Paul McCartney to Glastonbury," she said.

McCartney, who will be the festival's oldest ever headliner, will take to the stage one day after its youngest.

Twenty-year-old American singer-songwriter Billie Eilish delivered a crowd-pleasing set, including hits "Bury a Friend" and "Bad Guy".

She alluded to the U.S. Supreme Court overturning the constitutional right to abortion earlier on Friday, saying it was a "really dark day for women".

Other performers at Worthy Farm in southwest England on Saturday include Sam Fender, Noel Gallagher's High Flying Birds and Megan Thee Stallion.

(Reporting by Paul Sandle and Sarah Mills; Editing by Peter Graff)