Jake White will coach the side, along with Eddie Jones, reuniting the coaching partnership that helped South Africa win the World Cup last year.

"This is one of the better Barbarians side there has been for a while and Eddie and I are really chuffed to get this group of players together," said White.

"It has been nice for me to be with the (players I coached at the World Cup) but it has also been nice to coach players like Richie McCaw and Joe Rokocoko.

"It is nice to see the players who usually smash into each other having an opportunity to play as a team and that is something unique in rugby.

Veteran Australia scrum-half George Gregan, Test rugby's most capped player, is on the bench alongside Western Province forward Nick Koster, who maintains the Barbarians tradition of picking an uncapped player.

The game is part of the British Olympic Association's centenary celebrations of the 1908 London Games. Australia won the rugby gold medal at those Games with a 32-3 victory over Great Britain, who were represented by Cornwall.

Wednesday's game will be the first rugby union match to be played at the rebuilt Wembley, and the first at the stadium since Wales' thrilling last-gasp 32-31 win over England in 1999.

Barbarians team:

Percy Montgomery (SA); Joe Rokocoko (NZ), Rico Gear (NZ), Jean de Villiers (SA), Bryan Habana (SA); Francois Steyn (SA), Fourie du Preez (SA); Federico Pucciariello (Ita), John Smit (SA, capt), Census Johnson (Samoa), Bakkies Botha (SA), Johann Muller (SA), Jerry Collins (NZ), Richie McCaw (NZ), Schalk Burger (SA).

Replacements: Mark Regan (Eng), Rodney Blake (Aus), Chris Jack (NZ), Nick Koster (SA, uncapped), George Gregan (Aus), Ollie Smith (Eng), Shane Williams (Wal).

Australia team:

James O'Connor; Lote Tuqiri, Ryan Cross, Adam Ashley-Cooper, Digby Ioane; Quade Cooper, Brett Sheehan; Sekope Kepu, Tatafu Polota-Nau, Matt Dunning, Mark Chisholm, Hugh McMeniman, Dean Mumm, George Smith (capt), Richard Brown.

Replacements: Adam Freier, Ben Alexander, Peter Kimlin, David Pocock, Luke Burgess, Lachie Turner, Drew Mitchell.