Officials for the London 2012 Olympic Games have reaffirmed that they want to keep the line-up for the upcoming closing ceremony to remain a secret.

A number of rumours and self-confirmations have been made public in the past few days as speculation grows ahead of the ceremony on Sunday (August 12).

The likes of One Direction have constantly been linked with performing at the event, with fresh tabloid reports this morning (August 9) suggesting that is a done deal.

George Michael and Muse meanwhile are two acts who have publicly stated that they will be performing at the Olympic Stadium event, which is expected to have a TV audience of up to 900m.

A spokesman for the London Organising Committee of the Olympic and Paralympic Games however refused to confirm yesterday (August 8) any acts for the ceremony, stating that they want the line-up to be kept secret. They said:

"We want to keep everything a secret, as with the opening ceremony. There's been rumours bandied about, particularly in the last 48 hours."