Earlier this year the former Beatle disclosed that he was in talks to play a role in the celebrations.

On Monday, he confirmed: “I’ve been booked.”

He told BBC radio station 5 Live that he would be “closing the opening” of the games.

The lineup for the ceremony, overseen by “Slumdog Millionaire” director Danny Boyle and themed “Isles of Wonder,” is a closely guarded secret, but many had suspected McCartney would be involved.

The Olympic Games take place July 27 to Aug. 12.