Sir Paul McCartney's performance at the Hard Rock Calling festival on Sunday (June 27) is to be streamed live via YouTube.

The former Beatle has teamed up with the BORN HIV FREE campaign to broadcast the set from London's Hyde Park.

Fans across the world will be able to watch from around 8:30pm GMT (2:30pm E.T). It will also remain on the BORN HIV FREE YouTube channel for a month after the show.

The campaign's ambassador Carla Bruni-Sarkozy said she hoped the concert would help “share our common belief in a world where all children can be born free from HIV”.

BORN HIV FREE, along with The Global Fund, is aiming to create a world where no child is born with HIV by 2015.

Amy Winehouse, U2 and fashion designer Jean-Paul Gaultier are amongst its supporters.

(by Jason Gregory)