I don't know, but I do know that it was a tribute to John Lennon. I didn't know about that concert.
It was May 1990. Here's the acts that performed live .......
Al Green, Cyndi Lauper, Dave Edmunds, Joe Cocker, Hall & Oates, Terence Trent D'Arby, Kylie Minogue, Lou Reed, Wet Wet Wet, The Royal Liverpool Philharmonic Orchestra, Deacon Blue, Natalie Cole, Lou Gramm, Justin Hayward & John Lodge (Moody Blues), Lenny Kravitz, Roberta Flack, Randy Travis, The Christians, Natalie Cole, and finally Yoko & Sean singing Give Peace a Chance with all the acts back on stage to join in.
I think Christopher Reeve was the presenter.
There were special video performances sent in by Paul, Ringo/Tom Petty/etc, Dave Stewart/Roger McGuinn, and Ray Charles