Apparently they did it 7.8.2003 in Melbourne at a WWRY aftershow party with Roger on vocals and his son Rufus on drums. They did Whole Lotta Love aswell.
They also played it on the 18.10.2002 in Los Angeles with Steve Vai on guitar.
Also on the 15.5.2002 at the WWRY Premiere.
And at the Wolverhampton gig as you said.
For info on concerts go to link, it's the best thing for this stuff.
I believe they did it at a DORO party in 1998, in my city of Wolverhampton in March 1999, Roger did it for the rest of his tour and they have reprised it at several WWRY parties.