Robbie Williams is to headline a fundraising charity concert at Twickenham Stadium, Sept. 12, in honor of the British Armed Forces.

James Blunt, Alexandra Burke, Pixie Lott, Plan B and U.K. girl band The Saturdays are also confirmed to perform at the one-off gig, which organizers say will be attended by an audience of 60,000.

In addition to the music line-up, the show's bill also features a host of U.K. comedians and television personalities, including veteran broadcaster Bruce Forsyth and British comics Jack Dee, Peter Kay and Michael McIntyre.

All performers have donated their services free of charge with proceeds from ticket sales to be donated to the U.K. Help for Heroes Charity, which provides care and support for British soldiers wounded in service. Live Nation, who is promoting the concert, says that it expects the event to raise approx £750,000 ($1.2m) for Help For Heroes.

The event will be broadcast on national TV network BBC One.

In a statement, Robbie Williams said: "I am honored to be a part of this show and to help draw attention to the amazing job done by our servicemen and women throughout the world."

As previously reported, Williams recently rejoined his former band Take That to record a new album, due November on Polydor/Universal. According to a spokesperson for the charity concert, Williams' performance at Twickenham Stadium will be a solo set.

Bryn Parry, CEO Help for Heroes, said in a statement: "Help for Heroes is all about ordinary people doing their bit to support the men and women of our Armed Forces."

"Our boys and girls, both those operating in the remote patrol bases and those recovering from life changing injuries, will hear this concert and know that they are in the forefront of our minds. They are not forgotten, wherever they are," Parry continued.

Tickets go on sale 9am (GMT) Aug. 4 from, and