The Olympic closing ceremony is set to wow Britian with a "party, party, party" atmosphere, according to London 2012 chairman Lord Coe.

Speaking at London's daily Olympics presser, artistic director Kim Gavin said: "We want it to be the best after-show party there has ever been."

Sunday's two hour and 45 minute grand finale starts with Elgar and Waterloo Sunset at 9pm, and features over 4,000 volunteers.

Although exactly who will perform remains a secret, pop stars such as the Spice Girls, George Michael, the Pet Shop Boys, Jessie J and Tinie Tempah, have been photographed at rehearsals.

"Any more than that and we would spoil the surprise," Mr Gavin said at a press conference.

"We are still rehearsing and waiting for the final line-up."

The set-up will begin at 11pm on Saturday night, giving crews just a few hours to turn the Olympic Stadium in Stratford into an arena fit for a showbiz spectacular.

Amongst the formalities and events of the ceremony, the Games will be handed over to Rio ahead of 2016, and the Olympic flame will be extinguished to signal the end of the Games.

Traditionally, it is a chance to celebrate what the athletes have achieved and also for a massive party, and organisers have said that will be a key part of the event.